-5(-9-3x)=21

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Solution for -5(-9-3x)=21 equation: 


Simplifying
-5(-9 + -3x) = 21
(-9 * -5 + -3x * -5) = 21
(45 + 15x) = 21

Solving
45 + 15x = 21

Solving for variable 'x'.

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

Add '-45' to each side of the equation.
45 + -45 + 15x = 21 + -45

Combine like terms: 45 + -45 = 0
0 + 15x = 21 + -45
15x = 21 + -45

Combine like terms: 21 + -45 = -24
15x = -24

Divide each side by '15'.
x = -1.6

Simplifying
x = -1.6

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