Solve for x
x=-\left(y+8\right)
Solve for y
y=-\left(x+8\right)
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7+x+y=-1
Add 2.5 and 4.5 to get 7.
x+y=-1-7
Subtract 7 from both sides.
x+y=-8
Subtract 7 from -1 to get -8.
x=-8-y
Subtract y from both sides.
7+x+y=-1
Add 2.5 and 4.5 to get 7.
x+y=-1-7
Subtract 7 from both sides.
x+y=-8
Subtract 7 from -1 to get -8.
y=-8-x
Subtract x from both sides.
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