-3x-x=1+7x-7x+15

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Solution for -3x-x=1+7x-7x+15 equation: 


Simplifying
-3x + -1x = 1 + 7x + -7x + 15

Combine like terms: -3x + -1x = -4x
-4x = 1 + 7x + -7x + 15

Reorder the terms:
-4x = 1 + 15 + 7x + -7x

Combine like terms: 1 + 15 = 16
-4x = 16 + 7x + -7x

Combine like terms: 7x + -7x = 0
-4x = 16 + 0
-4x = 16

Solving
-4x = 16

Solving for variable 'x'.

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

Divide each side by '-4'.
x = -4

Simplifying
x = -4

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