100=8x-.25x-20

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Solution for 100=8x-.25x-20 equation:


Simplifying
100 = 8x + -0.25x + -20

Reorder the terms:
100 = -20 + 8x + -0.25x

Combine like terms: 8x + -0.25x = 7.75x
100 = -20 + 7.75x

Solving
100 = -20 + 7.75x

Solving for variable 'x'.

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

Add '-7.75x' to each side of the equation.
100 + -7.75x = -20 + 7.75x + -7.75x

Combine like terms: 7.75x + -7.75x = 0.00
100 + -7.75x = -20 + 0.00
100 + -7.75x = -20

Add '-100' to each side of the equation.
100 + -100 + -7.75x = -20 + -100

Combine like terms: 100 + -100 = 0
0 + -7.75x = -20 + -100
-7.75x = -20 + -100

Combine like terms: -20 + -100 = -120
-7.75x = -120

Divide each side by '-7.75'.
x = 15.48387097

Simplifying
x = 15.48387097

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