15-x=7

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Solution for 15-x=7 equation: 


Simplifying
15 + -1x = 7

Solving
15 + -1x = 7

Solving for variable 'x'.

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

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 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8

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