12x-30=3(5+x)

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Solution for 12x-30=3(5+x) equation:


Simplifying
12x + -30 = 3(5 + x)

Reorder the terms:
-30 + 12x = 3(5 + x)
-30 + 12x = (5 * 3 + x * 3)
-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 = 9x
-30 + 9x = 15 + 3x + -3x

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

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

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

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

Divide each side by '9'.
x = 5

Simplifying
x = 5

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