X+y=7 ; x-y=-1(simultaneously in graphical method) – InterviewSolution

1.

X+y=7 ; x-y=-1(simultaneously in graphical method)

Answer»

X=3 and y=4

Step-by-step EXPLANATION:

$x + y = 7$

$x - y = - 1$

Adding equations we GET:

$x + y + x - y = 7 - 1$

Or

$2x = 6$

$x = 3$

Put x in any of the equations:

$3 + y = 7$

$y = 4$

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