21-8x=12x-18

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Solution for 21-8x=12x-18 equation:


Simplifying
21 + -8x = 12x + -18

Reorder the terms:
21 + -8x = -18 + 12x

Solving
21 + -8x = -18 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
21 + -8x + -12x = -18 + 12x + -12x

Combine like terms: -8x + -12x = -20x
21 + -20x = -18 + 12x + -12x

Combine like terms: 12x + -12x = 0
21 + -20x = -18 + 0
21 + -20x = -18

Add '-21' to each side of the equation.
21 + -21 + -20x = -18 + -21

Combine like terms: 21 + -21 = 0
0 + -20x = -18 + -21
-20x = -18 + -21

Combine like terms: -18 + -21 = -39
-20x = -39

Divide each side by '-20'.
x = 1.95

Simplifying
x = 1.95

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