12x+30=7x-15

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Solution for 12x+30=7x-15 equation:


Simplifying
12x + 30 = 7x + -15

Reorder the terms:
30 + 12x = 7x + -15

Reorder the terms:
30 + 12x = -15 + 7x

Solving
30 + 12x = -15 + 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.
30 + 12x + -7x = -15 + 7x + -7x

Combine like terms: 12x + -7x = 5x
30 + 5x = -15 + 7x + -7x

Combine like terms: 7x + -7x = 0
30 + 5x = -15 + 0
30 + 5x = -15

Add '-30' to each side of the equation.
30 + -30 + 5x = -15 + -30

Combine like terms: 30 + -30 = 0
0 + 5x = -15 + -30
5x = -15 + -30

Combine like terms: -15 + -30 = -45
5x = -45

Divide each side by '5'.
x = -9

Simplifying
x = -9

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