3(x-3)=21-2x

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Solution for 3(x-3)=21-2x equation:


Simplifying
3(x + -3) = 21 + -2x

Reorder the terms:
3(-3 + x) = 21 + -2x
(-3 * 3 + x * 3) = 21 + -2x
(-9 + 3x) = 21 + -2x

Solving
-9 + 3x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-9 + 3x + 2x = 21 + -2x + 2x

Combine like terms: 3x + 2x = 5x
-9 + 5x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-9 + 5x = 21 + 0
-9 + 5x = 21

Add '9' to each side of the equation.
-9 + 9 + 5x = 21 + 9

Combine like terms: -9 + 9 = 0
0 + 5x = 21 + 9
5x = 21 + 9

Combine like terms: 21 + 9 = 30
5x = 30

Divide each side by '5'.
x = 6

Simplifying
x = 6

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