-90-8x=7x+15

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Solution for -90-8x=7x+15 equation:


Simplifying
-90 + -8x = 7x + 15

Reorder the terms:
-90 + -8x = 15 + 7x

Solving
-90 + -8x = 15 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-90 + -8x + -7x = 15 + 7x + -7x

Combine like terms: -8x + -7x = -15x
-90 + -15x = 15 + 7x + -7x

Combine like terms: 7x + -7x = 0
-90 + -15x = 15 + 0
-90 + -15x = 15

Add '90' to each side of the equation.
-90 + 90 + -15x = 15 + 90

Combine like terms: -90 + 90 = 0
0 + -15x = 15 + 90
-15x = 15 + 90

Combine like terms: 15 + 90 = 105
-15x = 105

Divide each side by '-15'.
x = -7

Simplifying
x = -7

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