Question

How do you draw the solution for x+y=−1 and x−y=3?

Answer 1

$x + y = - 1 \\ x - y = 3 \\ { + } \\2x = 2 \\ x = 1 \\ \\ x + y = - 1 \\ x - y = 3 \\ { - } \\ 2y = - 4 \\ y = - 2$
here is your ans,x=1,y=-2
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