3(-9-4x)-4=8x-9(x+12)

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Solution for 3(-9-4x)-4=8x-9(x+12) equation:


Simplifying
3(-9 + -4x) + -4 = 8x + -9(x + 12)
(-9 * 3 + -4x * 3) + -4 = 8x + -9(x + 12)
(-27 + -12x) + -4 = 8x + -9(x + 12)

Reorder the terms:
-27 + -4 + -12x = 8x + -9(x + 12)

Combine like terms: -27 + -4 = -31
-31 + -12x = 8x + -9(x + 12)

Reorder the terms:
-31 + -12x = 8x + -9(12 + x)
-31 + -12x = 8x + (12 * -9 + x * -9)
-31 + -12x = 8x + (-108 + -9x)

Reorder the terms:
-31 + -12x = -108 + 8x + -9x

Combine like terms: 8x + -9x = -1x
-31 + -12x = -108 + -1x

Solving
-31 + -12x = -108 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-31 + -12x + x = -108 + -1x + x

Combine like terms: -12x + x = -11x
-31 + -11x = -108 + -1x + x

Combine like terms: -1x + x = 0
-31 + -11x = -108 + 0
-31 + -11x = -108

Add '31' to each side of the equation.
-31 + 31 + -11x = -108 + 31

Combine like terms: -31 + 31 = 0
0 + -11x = -108 + 31
-11x = -108 + 31

Combine like terms: -108 + 31 = -77
-11x = -77

Divide each side by '-11'.
x = 7

Simplifying
x = 7

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