-7(-4+7x)=-21

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Solution for -7(-4+7x)=-21 equation: 


Simplifying
-7(-4 + 7x) = -21
(-4 * -7 + 7x * -7) = -21
(28 + -49x) = -21

Solving
28 + -49x = -21

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + -49x = -21 + -28

Combine like terms: 28 + -28 = 0
0 + -49x = -21 + -28
-49x = -21 + -28

Combine like terms: -21 + -28 = -49
-49x = -49

Divide each side by '-49'.
x = 1

Simplifying
x = 1

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