-7(9+2x)=-21

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Solution for -7(9+2x)=-21 equation: 


Simplifying
-7(9 + 2x) = -21
(9 * -7 + 2x * -7) = -21
(-63 + -14x) = -21

Solving
-63 + -14x = -21

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + -14x = -21 + 63

Combine like terms: -63 + 63 = 0
0 + -14x = -21 + 63
-14x = -21 + 63

Combine like terms: -21 + 63 = 42
-14x = 42

Divide each side by '-14'.
x = -3

Simplifying
x = -3

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