x+8=-3x-7

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Solution for x+8=-3x-7 equation:


Simplifying
x + 8 = -3x + -7

Reorder the terms:
8 + x = -3x + -7

Reorder the terms:
8 + x = -7 + -3x

Solving
8 + x = -7 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
8 + x + 3x = -7 + -3x + 3x

Combine like terms: x + 3x = 4x
8 + 4x = -7 + -3x + 3x

Combine like terms: -3x + 3x = 0
8 + 4x = -7 + 0
8 + 4x = -7

Add '-8' to each side of the equation.
8 + -8 + 4x = -7 + -8

Combine like terms: 8 + -8 = 0
0 + 4x = -7 + -8
4x = -7 + -8

Combine like terms: -7 + -8 = -15
4x = -15

Divide each side by '4'.
x = -3.75

Simplifying
x = -3.75

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