12=-7x-9

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Solution for 12=-7x-9 equation:


Simplifying
12 = -7x + -9

Reorder the terms:
12 = -9 + -7x

Solving
12 = -9 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
12 + 7x = -9 + -7x + 7x

Combine like terms: -7x + 7x = 0
12 + 7x = -9 + 0
12 + 7x = -9

Add '-12' to each side of the equation.
12 + -12 + 7x = -9 + -12

Combine like terms: 12 + -12 = 0
0 + 7x = -9 + -12
7x = -9 + -12

Combine like terms: -9 + -12 = -21
7x = -21

Divide each side by '7'.
x = -3

Simplifying
x = -3

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