x+y=x-7

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Solution for x+y=x-7 equation: 


Simplifying
x + y = x + -7

Reorder the terms:
x + y = -7 + x

Add '-1x' to each side of the equation.
x + -1x + y = -7 + x + -1x

Combine like terms: x + -1x = 0
0 + y = -7 + x + -1x
y = -7 + x + -1x

Combine like terms: x + -1x = 0
y = -7 + 0
y = -7

Solving
y = -7

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Simplifying
y = -7

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