-4(x+21)=0

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Solution for -4(x+21)=0 equation: 


Simplifying
-4(x + 21) = 0

Reorder the terms:
-4(21 + x) = 0
(21 * -4 + x * -4) = 0
(-84 + -4x) = 0

Solving
-84 + -4x = 0

Solving for variable 'x'.

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

Add '84' to each side of the equation.
-84 + 84 + -4x = 0 + 84

Combine like terms: -84 + 84 = 0
0 + -4x = 0 + 84
-4x = 0 + 84

Combine like terms: 0 + 84 = 84
-4x = 84

Divide each side by '-4'.
x = -21

Simplifying
x = -21

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