7-x=15

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Solution for 7-x=15 equation: 


Simplifying
7 + -1x = 15

Solving
7 + -1x = 15

Solving for variable 'x'.

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

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

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

Combine like terms: 15 + -7 = 8
-1x = 8

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

Simplifying
x = -8

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