-3(-10+7x)=-138

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Solution for -3(-10+7x)=-138 equation: 


Simplifying
-3(-10 + 7x) = -138
(-10 * -3 + 7x * -3) = -138
(30 + -21x) = -138

Solving
30 + -21x = -138

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + -21x = -138 + -30

Combine like terms: 30 + -30 = 0
0 + -21x = -138 + -30
-21x = -138 + -30

Combine like terms: -138 + -30 = -168
-21x = -168

Divide each side by '-21'.
x = 8

Simplifying
x = 8

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