3(-8+7x)=-129

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Solution for 3(-8+7x)=-129 equation: 


Simplifying
3(-8 + 7x) = -129
(-8 * 3 + 7x * 3) = -129
(-24 + 21x) = -129

Solving
-24 + 21x = -129

Solving for variable 'x'.

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

Add '24' to each side of the equation.
-24 + 24 + 21x = -129 + 24

Combine like terms: -24 + 24 = 0
0 + 21x = -129 + 24
21x = -129 + 24

Combine like terms: -129 + 24 = -105
21x = -105

Divide each side by '21'.
x = -5

Simplifying
x = -5

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