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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 -78.975+84.5/（1+x/12*6）+0.325/（1+x/12*13） = 0 .
    Question type: Equation
    Solution:Original question:
      -
3159
40
 +
169
2
 ÷ (1 + x ÷ 12 × 6) +
13
40
 ÷ (1 + x ÷ 12 × 13) = 0
     Multiply both sides of the equation by:(1 + x ÷ 12 × 6)
      -
3159
40
(1 + x ÷ 12 × 6) +
169
2
 +
13
40
 ÷ (1 + x ÷ 12 × 13) × (1 + x ÷ 12 × 6) = 0
    Remove a bracket on the left of the equation:：
      -
3159
40
 × 1 −
3159
40
 x ÷ 12 × 6 +
169
2
 +
13
40
 ÷ (1 + x ÷ 12 × 13) × (1 + x ÷ 12 × 6) = 0
    The equation is reduced to :
      -
3159
40
 −
3159
80
 x +
169
2
 +
13
40
 ÷ (1 + x ÷ 12 × 13) × (1 + x ÷ 12 × 6) = 0
    The equation is reduced to :
     
221
40
 −
3159
80
 x +
13
40
 ÷ (1 + x ÷ 12 × 13) × (1 + x ÷ 12 × 6) = 0
     Multiply both sides of the equation by:(1 + x ÷ 12 × 13)
     
221
40
(1 + x ÷ 12 × 13) −
3159
80
 x (1 + x ÷ 12 × 13) +
13
40
(1 + x ÷ 12 × 6) = 0
    Remove a bracket on the left of the equation:
     
221
40
 × 1 +
221
40
 x ÷ 12 × 13 −
3159
80
 x (1 + x ÷ 12 × 13) +
13
40
(1 + x ÷ 12 × 6) = 0
    The equation is reduced to :
     
221
40
 +
2873
480
 x −
3159
80
 x (1 + x ÷ 12 × 13) +
13
40
(1 + x ÷ 12 × 6) = 0
    Remove a bracket on the left of the equation:
     
221
40
 +
2873
480
 x −
3159
80
 x × 1 −
3159
80
 x x ÷ 12 × 13 +
13
40
 = 0
    The equation is reduced to :
     
221
40
 +
2873
480
 x −
3159
80
 x −
13689
320
 x x +
13
40
(1 + x ÷ 12 × 6) = 0
    The equation is reduced to :
     
221
40
 −
16081
480
 x −
13689
320
 x x +
13
40
(1 + x ÷ 12 × 6) = 0
    Remove a bracket on the left of the equation:
     
221
40
 −
16081
480
 x −
13689
320
 x x +
13
40
 × 1 +
13
40
 x ÷ 12 × 6 = 0
    The equation is reduced to :
     
221
40
 −
16081
480
 x −
13689
320
 x x +
13
40
 +
13
80
 x = 0
    The equation is reduced to :
     
117
20
 −
16003
480
 x −
13689
320
 x x = 0

    
        x≈0.147537 , keep 6 decimal places    
    There are 1 solution(s).

解一元一次方程的详细方法请参阅：《一元一次方程的解法》


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