-63+3d-12=-21

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Solution for -63+3d-12=-21 equation:


Simplifying
-63 + 3d + -12 = -21

Reorder the terms:
-63 + -12 + 3d = -21

Combine like terms: -63 + -12 = -75
-75 + 3d = -21

Solving
-75 + 3d = -21

Solving for variable 'd'.

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

Add '75' to each side of the equation.
-75 + 75 + 3d = -21 + 75

Combine like terms: -75 + 75 = 0
0 + 3d = -21 + 75
3d = -21 + 75

Combine like terms: -21 + 75 = 54
3d = 54

Divide each side by '3'.
d = 18

Simplifying
d = 18

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