120=x-.13x

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Solution for 120=x-.13x equation:


Simplifying
120 = x + -0.13x

Combine like terms: x + -0.13x = 0.87x
120 = 0.87x

Solving
120 = 0.87x

Solving for variable 'x'.

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

Add '-0.87x' to each side of the equation.
120 + -0.87x = 0.87x + -0.87x

Combine like terms: 0.87x + -0.87x = 0.00
120 + -0.87x = 0.00

Add '-120' to each side of the equation.
120 + -120 + -0.87x = 0.00 + -120

Combine like terms: 120 + -120 = 0
0 + -0.87x = 0.00 + -120
-0.87x = 0.00 + -120

Combine like terms: 0.00 + -120 = -120
-0.87x = -120

Divide each side by '-0.87'.
x = 137.9310345

Simplifying
x = 137.9310345

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