-3(x+7)=-21

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Solution for -3(x+7)=-21 equation: 


Simplifying
-3(x + 7) = -21

Reorder the terms:
-3(7 + x) = -21
(7 * -3 + x * -3) = -21
(-21 + -3x) = -21

Add '21' to each side of the equation.
-21 + 21 + -3x = -21 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = -21 + 21
-3x = -21 + 21

Combine like terms: -21 + 21 = 0
-3x = 0

Solving
-3x = 0

Solving for variable 'x'.

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

Divide each side by '-3'.
x = 0

Simplifying
x = 0

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