-7(-7+2x)=-21

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Solution for -7(-7+2x)=-21 equation: 


Simplifying
-7(-7 + 2x) = -21
(-7 * -7 + 2x * -7) = -21
(49 + -14x) = -21

Solving
49 + -14x = -21

Solving for variable 'x'.

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

Add '-49' to each side of the equation.
49 + -49 + -14x = -21 + -49

Combine like terms: 49 + -49 = 0
0 + -14x = -21 + -49
-14x = -21 + -49

Combine like terms: -21 + -49 = -70
-14x = -70

Divide each side by '-14'.
x = 5

Simplifying
x = 5

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