solve pairs of simuntaneous equation
43x + 31y = 98
31x + 43y = 50
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2
Answer:
Multiply the equation 47x+31y=63 by 31 and equation 31x+47y=15 by 47 to make the coefficients of x
equal. Then we get the equations:
1457x+961y=1953.........(1)
1457x+2209y=705.........(2)
Subtract Equation (1) from Equation (2) to eliminate x, because the coefficients of x are the same. So, we get
(1457x−1457x)+(2209y−961y)=32−27
i.e. 1248y=−1248
i.e. y=−1
Substituting this value of y in the equation 47x+31y=63, we get
47x−31=63
i.e. 47x=94
i.e. x=2
Hence, the solution of the equations is x=2,y=−1.
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above is the answer ^^^and the answer is right
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