100=.8x

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Solution for 100=.8x equation:


Simplifying
100 = 0.8x

Solving
100 = 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
100 + -0.8x = 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
100 + -0.8x = 0.0

Add '-100' to each side of the equation.
100 + -100 + -0.8x = 0.0 + -100

Combine like terms: 100 + -100 = 0
0 + -0.8x = 0.0 + -100
-0.8x = 0.0 + -100

Combine like terms: 0.0 + -100 = -100
-0.8x = -100

Divide each side by '-0.8'.
x = 125

Simplifying
x = 125

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