-129=-6x-3(4x+13)

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Solution for -129=-6x-3(4x+13) equation:


Simplifying
-129 = -6x + -3(4x + 13)

Reorder the terms:
-129 = -6x + -3(13 + 4x)
-129 = -6x + (13 * -3 + 4x * -3)
-129 = -6x + (-39 + -12x)

Reorder the terms:
-129 = -39 + -6x + -12x

Combine like terms: -6x + -12x = -18x
-129 = -39 + -18x

Solving
-129 = -39 + -18x

Solving for variable 'x'.

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

Add '18x' to each side of the equation.
-129 + 18x = -39 + -18x + 18x

Combine like terms: -18x + 18x = 0
-129 + 18x = -39 + 0
-129 + 18x = -39

Add '129' to each side of the equation.
-129 + 129 + 18x = -39 + 129

Combine like terms: -129 + 129 = 0
0 + 18x = -39 + 129
18x = -39 + 129

Combine like terms: -39 + 129 = 90
18x = 90

Divide each side by '18'.
x = 5

Simplifying
x = 5

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