3(7-7x)=-210

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Solution for 3(7-7x)=-210 equation: 


Simplifying
3(7 + -7x) = -210
(7 * 3 + -7x * 3) = -210
(21 + -21x) = -210

Solving
21 + -21x = -210

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 = -210 + -21

Combine like terms: 21 + -21 = 0
0 + -21x = -210 + -21
-21x = -210 + -21

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

Divide each side by '-21'.
x = 11

Simplifying
x = 11

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