X-8=-15

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Solution for X-8=-15 equation: 


Simplifying
X + -8 = -15

Reorder the terms:
-8 + X = -15

Solving
-8 + X = -15

Solving for variable 'X'.

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

Add '8' to each side of the equation.
-8 + 8 + X = -15 + 8

Combine like terms: -8 + 8 = 0
0 + X = -15 + 8
X = -15 + 8

Combine like terms: -15 + 8 = -7
X = -7

Simplifying
X = -7

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