-138-8x=7x+42

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Solution for -138-8x=7x+42 equation:


Simplifying
-138 + -8x = 7x + 42

Reorder the terms:
-138 + -8x = 42 + 7x

Solving
-138 + -8x = 42 + 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.
-138 + -8x + -7x = 42 + 7x + -7x

Combine like terms: -8x + -7x = -15x
-138 + -15x = 42 + 7x + -7x

Combine like terms: 7x + -7x = 0
-138 + -15x = 42 + 0
-138 + -15x = 42

Add '138' to each side of the equation.
-138 + 138 + -15x = 42 + 138

Combine like terms: -138 + 138 = 0
0 + -15x = 42 + 138
-15x = 42 + 138

Combine like terms: 42 + 138 = 180
-15x = 180

Divide each side by '-15'.
x = -12

Simplifying
x = -12

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