12x+30=15-3x

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Solution for 12x+30=15-3x equation:


Simplifying
12x + 30 = 15 + -3x

Reorder the terms:
30 + 12x = 15 + -3x

Solving
30 + 12x = 15 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
30 + 12x + 3x = 15 + -3x + 3x

Combine like terms: 12x + 3x = 15x
30 + 15x = 15 + -3x + 3x

Combine like terms: -3x + 3x = 0
30 + 15x = 15 + 0
30 + 15x = 15

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

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

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

Divide each side by '15'.
x = -1

Simplifying
x = -1

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