21.7=x-.3x

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Solution for 21.7=x-.3x equation:


Simplifying
21.7 = x + -0.3x

Combine like terms: x + -0.3x = 0.7x
21.7 = 0.7x

Solving
21.7 = 0.7x

Solving for variable 'x'.

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

Add '-0.7x' to each side of the equation.
21.7 + -0.7x = 0.7x + -0.7x

Combine like terms: 0.7x + -0.7x = 0.0
21.7 + -0.7x = 0.0

Add '-21.7' to each side of the equation.
21.7 + -21.7 + -0.7x = 0.0 + -21.7

Combine like terms: 21.7 + -21.7 = 0.0
0.0 + -0.7x = 0.0 + -21.7
-0.7x = 0.0 + -21.7

Combine like terms: 0.0 + -21.7 = -21.7
-0.7x = -21.7

Divide each side by '-0.7'.
x = 31

Simplifying
x = 31

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