8=-x-3x

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Solution for 8=-x-3x equation:


Simplifying
8 = -1x + -3x

Combine like terms: -1x + -3x = -4x
8 = -4x

Solving
8 = -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
8 + 4x = -4x + 4x

Combine like terms: -4x + 4x = 0
8 + 4x = 0

Add '-8' to each side of the equation.
8 + -8 + 4x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 4x = 0 + -8
4x = 0 + -8

Combine like terms: 0 + -8 = -8
4x = -8

Divide each side by '4'.
x = -2

Simplifying
x = -2

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