-7(-1-3x)=217

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Solution for -7(-1-3x)=217 equation: 


Simplifying
-7(-1 + -3x) = 217
(-1 * -7 + -3x * -7) = 217
(7 + 21x) = 217

Solving
7 + 21x = 217

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 21x = 217 + -7

Combine like terms: 7 + -7 = 0
0 + 21x = 217 + -7
21x = 217 + -7

Combine like terms: 217 + -7 = 210
21x = 210

Divide each side by '21'.
x = 10

Simplifying
x = 10

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