9x-3(7+2x)=-12

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Solution for 9x-3(7+2x)=-12 equation:


Simplifying
9x + -3(7 + 2x) = -12
9x + (7 * -3 + 2x * -3) = -12
9x + (-21 + -6x) = -12

Reorder the terms:
-21 + 9x + -6x = -12

Combine like terms: 9x + -6x = 3x
-21 + 3x = -12

Solving
-21 + 3x = -12

Solving for variable 'x'.

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

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

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

Combine like terms: -12 + 21 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3

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