-8[2x-9]=20-12x

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Solution for -8[2x-9]=20-12x equation:


Simplifying
-8[2x + -9] = 20 + -12x

Reorder the terms:
-8[-9 + 2x] = 20 + -12x
[-9 * -8 + 2x * -8] = 20 + -12x
[72 + -16x] = 20 + -12x

Solving
72 + -16x = 20 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
72 + -16x + 12x = 20 + -12x + 12x

Combine like terms: -16x + 12x = -4x
72 + -4x = 20 + -12x + 12x

Combine like terms: -12x + 12x = 0
72 + -4x = 20 + 0
72 + -4x = 20

Add '-72' to each side of the equation.
72 + -72 + -4x = 20 + -72

Combine like terms: 72 + -72 = 0
0 + -4x = 20 + -72
-4x = 20 + -72

Combine like terms: 20 + -72 = -52
-4x = -52

Divide each side by '-4'.
x = 13

Simplifying
x = 13

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