7-3x-7x=87

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Solution for 7-3x-7x=87 equation: 


Simplifying
7 + -3x + -7x = 87

Combine like terms: -3x + -7x = -10x
7 + -10x = 87

Solving
7 + -10x = 87

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 + -10x = 87 + -7

Combine like terms: 7 + -7 = 0
0 + -10x = 87 + -7
-10x = 87 + -7

Combine like terms: 87 + -7 = 80
-10x = 80

Divide each side by '-10'.
x = -8

Simplifying
x = -8

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