x+21=12+(1.5)x

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Solution for x+21=12+(1.5)x equation:


Simplifying
x + 21 = 12 + (1.5) * x

Reorder the terms:
21 + x = 12 + (1.5) * x

Solving
21 + x = 12 + 1.5x

Solving for variable 'x'.

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

Add '-1.5x' to each side of the equation.
21 + x + -1.5x = 12 + 1.5x + -1.5x

Combine like terms: x + -1.5x = -0.5x
21 + -0.5x = 12 + 1.5x + -1.5x

Combine like terms: 1.5x + -1.5x = 0.0
21 + -0.5x = 12 + 0.0
21 + -0.5x = 12

Add '-21' to each side of the equation.
21 + -21 + -0.5x = 12 + -21

Combine like terms: 21 + -21 = 0
0 + -0.5x = 12 + -21
-0.5x = 12 + -21

Combine like terms: 12 + -21 = -9
-0.5x = -9

Divide each side by '-0.5'.
x = 18

Simplifying
x = 18

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