-8d+3=-21

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Solution for -8d+3=-21 equation: 


Simplifying
-8d + 3 = -21

Reorder the terms:
3 + -8d = -21

Solving
3 + -8d = -21

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + -8d = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -8d = -21 + -3
-8d = -21 + -3

Combine like terms: -21 + -3 = -24
-8d = -24

Divide each side by '-8'.
d = 3

Simplifying
d = 3

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