18x+36+12x-21=

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Solution for 18x+36+12x-21= equation:


Simplifying
18x + 36 + 12x + -21 = 0

Reorder the terms:
36 + -21 + 18x + 12x = 0

Combine like terms: 36 + -21 = 15
15 + 18x + 12x = 0

Combine like terms: 18x + 12x = 30x
15 + 30x = 0

Solving
15 + 30x = 0

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 30x = 0 + -15

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

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

Divide each side by '30'.
x = -0.5

Simplifying
x = -0.5

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