-3(-10+3x)=21

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Solution for -3(-10+3x)=21 equation: 


Simplifying
-3(-10 + 3x) = 21
(-10 * -3 + 3x * -3) = 21
(30 + -9x) = 21

Solving
30 + -9x = 21

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + -9x = 21 + -30

Combine like terms: 30 + -30 = 0
0 + -9x = 21 + -30
-9x = 21 + -30

Combine like terms: 21 + -30 = -9
-9x = -9

Divide each side by '-9'.
x = 1

Simplifying
x = 1

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