-5d-21=54

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Solution for -5d-21=54 equation: 


Simplifying
-5d + -21 = 54

Reorder the terms:
-21 + -5d = 54

Solving
-21 + -5d = 54

Solving for variable 'd'.

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

Add '21' to each side of the equation.
-21 + 21 + -5d = 54 + 21

Combine like terms: -21 + 21 = 0
0 + -5d = 54 + 21
-5d = 54 + 21

Combine like terms: 54 + 21 = 75
-5d = 75

Divide each side by '-5'.
d = -15

Simplifying
d = -15

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