-3(-7x-7)=231

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Solution for -3(-7x-7)=231 equation: 


Simplifying
-3(-7x + -7) = 231

Reorder the terms:
-3(-7 + -7x) = 231
(-7 * -3 + -7x * -3) = 231
(21 + 21x) = 231

Solving
21 + 21x = 231

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 21x = 231 + -21

Combine like terms: 21 + -21 = 0
0 + 21x = 231 + -21
21x = 231 + -21

Combine like terms: 231 + -21 = 210
21x = 210

Divide each side by '21'.
x = 10

Simplifying
x = 10

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