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On line Solution of Monovariate Equation：
    Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
    It supports equations that contain mathematical functions.
    Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
    Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation （1+（2.78*（x+20））/（x+1420））/1+（2.78*x）/（x+1400） = 1.12 .
    Question type: Equation
    Solution:Original question:
     (1 + (
139
50
( x + 20)) ÷ ( x + 1420)) ÷ 1 + (
139
50
 x ) ÷ ( x + 1400) =
28
25
     Multiply both sides of the equation by:( x + 1400)
     (1 + (
139
50
( x + 20)) ÷ ( x + 1420)) ÷ 1 × ( x + 1400) + (
139
50
 x ) =
28
25
( x + 1400)
    Remove a bracket on the left of the equation:：
     1 ÷ 1 × ( x + 1400) + (
139
50
( x + 20)) ÷ ( x + 1420) ÷ 1 × ( x + 1400) + (
139
50
 x ) =
28
25
( x + 1400)
    Remove a bracket on the right of the equation:：
     1 ÷ 1 × ( x + 1400) + (
139
50
( x + 20)) ÷ ( x + 1420) ÷ 1 × ( x + 1400) + (
139
50
 x ) =
28
25
 x +
28
25
 × 1400
    The equation is reduced to :
     1( x + 1400) + (
139
50
( x + 20)) ÷ ( x + 1420) × 1( x + 1400) + (
139
50
 x ) =
28
25
 x + 1568
     Multiply both sides of the equation by:( x + 1420)
     1( x + 1400)( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x ( x + 1420) + 1568( x + 1420)
    Remove a bracket on the left of the equation:
     1 x ( x + 1420) + 1 × 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x ( x + 1420) + 1568( x + 1420)
    Remove a bracket on the right of the equation:：
     1 x ( x + 1420) + 1 × 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
28
25
 x × 1420 + 1568( x + 1420)
    The equation is reduced to :
     1 x ( x + 1420) + 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
7952
5
 x + 1568( x + 1420)
    Remove a bracket on the left of the equation:
     1 x x + 1 x × 1420 + 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x ) =
28
25
 x x +
7952
5
 x + 1568( x + 1420)
    Remove a bracket on the right of the equation:：
     1 x x + 1 x × 1420 + 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x ) =
28
25
 x x +
7952
5
 x + 1568 x + 1568 × 1420
    The equation is reduced to :
     1 x x + 1420 x + 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
7952
5
 x + 1568 x + 2226560
    The equation is reduced to :
     1 x x + 1420 x + 1400( x + 1420) + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
15792
5
 x + 2226560
    Remove a bracket on the left of the equation:
     1 x x + 1420 x + 1400 x + 1400 × 1420 + (
139
50
( x + 20)) × 1( x + 1400) =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 1420 x + 1400 x + 1988000 + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x ) =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 2820 x + 1988000 + (
139
50
( x + 20)) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
15792
5
 x + 2226560
    Remove a bracket on the left of the equation:
     1 x x + 2820 x + 1988000 +
139
50
( x + 20) × 1( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 2820 x + 1988000 +
139
50
( x + 20)( x + 1400) + (
139
50
 x )( x + 1420) =
28
25
 x x +
15792
5
 x + 2226560
    Remove a bracket on the left of the equation:
     1 x x + 2820 x + 1988000 +
139
50
 x ( x + 1400) +
139
50
 × 20( x + 1400) =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 2820 x + 1988000 +
139
50
 x ( x + 1400) +
278
5
( x + 1400) + (
139
50
 x ) =
28
25
 x x +
15792
5
 x + 2226560
    Remove a bracket on the left of the equation:
     1 x x + 2820 x + 1988000 +
139
50
 x x +
139
50
 x × 1400 =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 2820 x + 1988000 +
139
50
 x x + 3892 x +
278
5
 =
28
25
 x x +
15792
5
 x + 2226560
    The equation is reduced to :
     1 x x + 6712 x + 1988000 +
139
50
 x x +
278
5
( x + 1400) + (
139
50
 x ) =
28
25
 x x +
15792
5
 x + 2226560
    Remove a bracket on the left of the equation:
     1 x x + 6712 x + 1988000 +
139
50
 x x +
278
5
 x +
278
5
 =
28
25
 x x +
15792
5
 x + 2226560

    the solutions is:
        x≈20.952236 , keep 6 decimal places    
    There are 1 solution(s).

解方程的详细方法请参阅：《方程的解法》


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