3(2x+7)-2(12-3x)=21

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Solution for 3(2x+7)-2(12-3x)=21 equation:


Simplifying
3(2x + 7) + -2(12 + -3x) = 21

Reorder the terms:
3(7 + 2x) + -2(12 + -3x) = 21
(7 * 3 + 2x * 3) + -2(12 + -3x) = 21
(21 + 6x) + -2(12 + -3x) = 21
21 + 6x + (12 * -2 + -3x * -2) = 21
21 + 6x + (-24 + 6x) = 21

Reorder the terms:
21 + -24 + 6x + 6x = 21

Combine like terms: 21 + -24 = -3
-3 + 6x + 6x = 21

Combine like terms: 6x + 6x = 12x
-3 + 12x = 21

Solving
-3 + 12x = 21

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 12x = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 12x = 21 + 3
12x = 21 + 3

Combine like terms: 21 + 3 = 24
12x = 24

Divide each side by '12'.
x = 2

Simplifying
x = 2

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