12(3x+4)-7(2x-2)=2x-78

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Solution for 12(3x+4)-7(2x-2)=2x-78 equation:


Simplifying
12(3x + 4) + -7(2x + -2) = 2x + -78

Reorder the terms:
12(4 + 3x) + -7(2x + -2) = 2x + -78
(4 * 12 + 3x * 12) + -7(2x + -2) = 2x + -78
(48 + 36x) + -7(2x + -2) = 2x + -78

Reorder the terms:
48 + 36x + -7(-2 + 2x) = 2x + -78
48 + 36x + (-2 * -7 + 2x * -7) = 2x + -78
48 + 36x + (14 + -14x) = 2x + -78

Reorder the terms:
48 + 14 + 36x + -14x = 2x + -78

Combine like terms: 48 + 14 = 62
62 + 36x + -14x = 2x + -78

Combine like terms: 36x + -14x = 22x
62 + 22x = 2x + -78

Reorder the terms:
62 + 22x = -78 + 2x

Solving
62 + 22x = -78 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
62 + 22x + -2x = -78 + 2x + -2x

Combine like terms: 22x + -2x = 20x
62 + 20x = -78 + 2x + -2x

Combine like terms: 2x + -2x = 0
62 + 20x = -78 + 0
62 + 20x = -78

Add '-62' to each side of the equation.
62 + -62 + 20x = -78 + -62

Combine like terms: 62 + -62 = 0
0 + 20x = -78 + -62
20x = -78 + -62

Combine like terms: -78 + -62 = -140
20x = -140

Divide each side by '20'.
x = -7

Simplifying
x = -7

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