d+45=100

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Solution for d+45=100 equation: 


Simplifying
d + 45 = 100

Reorder the terms:
45 + d = 100

Solving
45 + d = 100

Solving for variable 'd'.

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

Add '-45' to each side of the equation.
45 + -45 + d = 100 + -45

Combine like terms: 45 + -45 = 0
0 + d = 100 + -45
d = 100 + -45

Combine like terms: 100 + -45 = 55
d = 55

Simplifying
d = 55

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