30=x-.85x

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Solution for 30=x-.85x equation:


Simplifying
30 = x + -0.85x

Combine like terms: x + -0.85x = 0.15x
30 = 0.15x

Solving
30 = 0.15x

Solving for variable 'x'.

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

Add '-0.15x' to each side of the equation.
30 + -0.15x = 0.15x + -0.15x

Combine like terms: 0.15x + -0.15x = 0.00
30 + -0.15x = 0.00

Add '-30' to each side of the equation.
30 + -30 + -0.15x = 0.00 + -30

Combine like terms: 30 + -30 = 0
0 + -0.15x = 0.00 + -30
-0.15x = 0.00 + -30

Combine like terms: 0.00 + -30 = -30
-0.15x = -30

Divide each side by '-0.15'.
x = 200

Simplifying
x = 200

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