100=250-7.5d

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Solution for 100=250-7.5d equation:


Simplifying
100 = 250 + -7.5d

Solving
100 = 250 + -7.5d

Solving for variable 'd'.

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

Add '7.5d' to each side of the equation.
100 + 7.5d = 250 + -7.5d + 7.5d

Combine like terms: -7.5d + 7.5d = 0.0
100 + 7.5d = 250 + 0.0
100 + 7.5d = 250

Add '-100' to each side of the equation.
100 + -100 + 7.5d = 250 + -100

Combine like terms: 100 + -100 = 0
0 + 7.5d = 250 + -100
7.5d = 250 + -100

Combine like terms: 250 + -100 = 150
7.5d = 150

Divide each side by '7.5'.
d = 20

Simplifying
d = 20

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