x+3+8x=5x-12

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Solution for x+3+8x=5x-12 equation:


Simplifying
x + 3 + 8x = 5x + -12

Reorder the terms:
3 + x + 8x = 5x + -12

Combine like terms: x + 8x = 9x
3 + 9x = 5x + -12

Reorder the terms:
3 + 9x = -12 + 5x

Solving
3 + 9x = -12 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
3 + 9x + -5x = -12 + 5x + -5x

Combine like terms: 9x + -5x = 4x
3 + 4x = -12 + 5x + -5x

Combine like terms: 5x + -5x = 0
3 + 4x = -12 + 0
3 + 4x = -12

Add '-3' to each side of the equation.
3 + -3 + 4x = -12 + -3

Combine like terms: 3 + -3 = 0
0 + 4x = -12 + -3
4x = -12 + -3

Combine like terms: -12 + -3 = -15
4x = -15

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

Simplifying
x = -3.75

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