Mathematics
         
语言:中文    Language:English
On line solution of multivariate equations:
    First set the elements of the equation (i.e. the number of unknowns), then click the "Next" button to enter the coefficients of each element of the equation set, and click the "Next" button to obtain the solution of the equation set.
    Note that the coefficients of each element of the equation system can only be numbers, not algebraic expressions (including mathematical functions).
    Current location:Equations > Multivariate equations > Answer
detailed information:
The input equation set is:
 197x + 4y = 1    (1)
 197x + 2y = 19    (2)
Question solving process:

Subtract both sides of equation (1) from both sides of equation (2) ,the equations are reduced to:
 197x + 4y = 1    (1)
394
197
y = 
3546
197
    (2)

Multiply both sides of equation (2) by 394
Divide both sides of equation (2) by 197, get the equation:
        
788
197
y = 
7092
197
    (3)
, then add the two sides of equation (3) to both sides of equation (1), get the equation:
 197x = 
7289
197
    (1)
394
197
y = 
3546
197
    (2)

The coefficient of the unknown number is reduced to 1, and the equations are reduced to:
 x = 
7289
38809
    (1)
 y = 
1773
197
    (2)


Therefore, the solution of the equation set is:
x = 
7289
38809
y = 
1773
197


Convert the solution of the equation set to decimals:
x = 0.187817
y = -9.000000

解方程组的详细方法请参阅:《多元一次方程组的解法》







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