100-d=10

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Solution for 100-d=10 equation: 


Simplifying
100 + -1d = 10

Solving
100 + -1d = 10

Solving for variable 'd'.

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

Add '-100' to each side of the equation.
100 + -100 + -1d = 10 + -100

Combine like terms: 100 + -100 = 0
0 + -1d = 10 + -100
-1d = 10 + -100

Combine like terms: 10 + -100 = -90
-1d = -90

Divide each side by '-1'.
d = 90

Simplifying
d = 90

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