-7=y-x

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Solution for -7=y-x equation: 


Simplifying
-7 = y + -1x

Reorder the terms:
-7 = -1x + y

Solving
-7 = -1x + y

Solving for variable 'x'.

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

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

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

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

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

Simplifying
x = 7 + y

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