3(x-3)=-6+21

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Solution for 3(x-3)=-6+21 equation: 


Simplifying
3(x + -3) = -6 + 21

Reorder the terms:
3(-3 + x) = -6 + 21
(-3 * 3 + x * 3) = -6 + 21
(-9 + 3x) = -6 + 21

Combine like terms: -6 + 21 = 15
-9 + 3x = 15

Solving
-9 + 3x = 15

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 3x = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = 15 + 9
3x = 15 + 9

Combine like terms: 15 + 9 = 24
3x = 24

Divide each side by '3'.
x = 8

Simplifying
x = 8

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