x-15=.9x

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Solution for x-15=.9x equation:


Simplifying
x + -15 = 0.9x

Reorder the terms:
-15 + x = 0.9x

Solving
-15 + x = 0.9x

Solving for variable 'x'.

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

Add '-0.9x' to each side of the equation.
-15 + x + -0.9x = 0.9x + -0.9x

Combine like terms: x + -0.9x = 0.1x
-15 + 0.1x = 0.9x + -0.9x

Combine like terms: 0.9x + -0.9x = 0.0
-15 + 0.1x = 0.0

Add '15' to each side of the equation.
-15 + 15 + 0.1x = 0.0 + 15

Combine like terms: -15 + 15 = 0
0 + 0.1x = 0.0 + 15
0.1x = 0.0 + 15

Combine like terms: 0.0 + 15 = 15
0.1x = 15

Divide each side by '0.1'.
x = 150

Simplifying
x = 150

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