15=y+x

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Solution for 15=y+x equation: 


Simplifying
15 = y + x

Reorder the terms:
15 = x + y

Solving
15 = x + y

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
15 + -1x = x + -1x + y

Combine like terms: x + -1x = 0
15 + -1x = 0 + y
15 + -1x = y

Add '-15' to each side of the equation.
15 + -15 + -1x = -15 + y

Combine like terms: 15 + -15 = 0
0 + -1x = -15 + y
-1x = -15 + y

Divide each side by '-1'.
x = 15 + -1y

Simplifying
x = 15 + -1y

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