15=x+-7

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Solution for 15=x+-7 equation:


Simplifying
15 = x + -7

Reorder the terms:
15 = -7 + x

Solving
15 = -7 + x

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 = -7 + x + -1x

Combine like terms: x + -1x = 0
15 + -1x = -7 + 0
15 + -1x = -7

Add '-15' to each side of the equation.
15 + -15 + -1x = -7 + -15

Combine like terms: 15 + -15 = 0
0 + -1x = -7 + -15
-1x = -7 + -15

Combine like terms: -7 + -15 = -22
-1x = -22

Divide each side by '-1'.
x = 22

Simplifying
x = 22

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