0.8(d-100)=100

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Solution for 0.8(d-100)=100 equation: 


Simplifying
0.8(d + -100) = 100

Reorder the terms:
0.8(-100 + d) = 100
(-100 * 0.8 + d * 0.8) = 100
(-80 + 0.8d) = 100

Solving
-80 + 0.8d = 100

Solving for variable 'd'.

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

Add '80' to each side of the equation.
-80 + 80 + 0.8d = 100 + 80

Combine like terms: -80 + 80 = 0
0 + 0.8d = 100 + 80
0.8d = 100 + 80

Combine like terms: 100 + 80 = 180
0.8d = 180

Divide each side by '0.8'.
d = 225

Simplifying
d = 225

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