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

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


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

Combine like terms: 3 + 12 = 15
15 = 2(x + -9) + -7x

Reorder the terms:
15 = 2(-9 + x) + -7x
15 = (-9 * 2 + x * 2) + -7x
15 = (-18 + 2x) + -7x

Combine like terms: 2x + -7x = -5x
15 = -18 + -5x

Solving
15 = -18 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
15 + 5x = -18 + -5x + 5x

Combine like terms: -5x + 5x = 0
15 + 5x = -18 + 0
15 + 5x = -18

Add '-15' to each side of the equation.
15 + -15 + 5x = -18 + -15

Combine like terms: 15 + -15 = 0
0 + 5x = -18 + -15
5x = -18 + -15

Combine like terms: -18 + -15 = -33
5x = -33

Divide each side by '5'.
x = -6.6

Simplifying
x = -6.6

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