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Mathematical calculation：
    Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
    It supports mathematical functions (including trigonometric functions).
    Current location：Mathematical operation > History of Mathematical Computation > Answer
    Overview: 1 questions will be solved this time.Among them
           ☆1 equations

[ 1/1 Equation]
    Work: Find the solution of equation （2000x12x0.9-70%x120Xx7.1%）÷（30%x120X+5%x120X） = 3.8% .
    Question type: Equation
    Solution:Original question:
     (2000 x × 12 x ×
9
10
 −
70
100
 x × 120 x x ×
71
1000
) ÷ (
30
100
 x × 120 x +
5
100
 x × 120 x ) =
19
500
     Multiply both sides of the equation by:(
30
100
 x × 120 x +
5
100
 x × 120 x )
     (2000 x × 12 x ×
9
10
 −
70
100
 x × 120 x x ×
71
1000
) =
19
500
(
30
100
 x × 120 x +
5
100
 x × 120 x )
    Remove a bracket on the left of the equation:：
     2000 x × 12 x ×
9
10
 −
70
100
 x × 120 x x ×
71
1000
 =
19
500
(
30
100
 x × 120 x +
5
100
 x × 120 x )
    Remove a bracket on the right of the equation:：
     2000 x × 12 x ×
9
10
 −
70
100
 x × 120 x x ×
71
1000
 =
19
500
 ×
30
100
 x × 120 x +
19
500
 ×
5
100
 x × 120 x
    The equation is reduced to :
     21600 x x −
1491
250
 x x x =
171
125
 x x +
57
250
 x x

    the solutions is:
        x≈3621.462777 , 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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