.80(x-100)=45

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Solution for .80(x-100)=45 equation: 


Simplifying
0.80(x + -100) = 45

Reorder the terms:
0.80(-100 + x) = 45
(-100 * 0.80 + x * 0.80) = 45
(-80 + 0.80x) = 45

Solving
-80 + 0.80x = 45

Solving for variable 'x'.

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

Add '80' to each side of the equation.
-80 + 80 + 0.80x = 45 + 80

Combine like terms: -80 + 80 = 0
0 + 0.80x = 45 + 80
0.80x = 45 + 80

Combine like terms: 45 + 80 = 125
0.80x = 125

Divide each side by '0.80'.
x = 156.25

Simplifying
x = 156.25

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