Question

Solve: x-y=1; x+y=-1​

Answer 1

Answer:

x-y=1; x+y=-1

Step-by-step explanation:

x=0

y=-1

Hope it helps u

Answer 2

Step-by-step explanation:

x - y = 1

x + y = -1

________ Add

2x = 0

x = 0/2

x = 0

value of x put in equation (1)

0 - y = 1

y = -1

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