12x-15=3x+30

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


Simplifying
12x + -15 = 3x + 30

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

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

Solving
-15 + 12x = 30 + 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.
-15 + 12x + -3x = 30 + 3x + -3x

Combine like terms: 12x + -3x = 9x
-15 + 9x = 30 + 3x + -3x

Combine like terms: 3x + -3x = 0
-15 + 9x = 30 + 0
-15 + 9x = 30

Add '15' to each side of the equation.
-15 + 15 + 9x = 30 + 15

Combine like terms: -15 + 15 = 0
0 + 9x = 30 + 15
9x = 30 + 15

Combine like terms: 30 + 15 = 45
9x = 45

Divide each side by '9'.
x = 5

Simplifying
x = 5

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