d-3+4d=12

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Solution for d-3+4d=12 equation: 


Simplifying
d + -3 + 4d = 12

Reorder the terms:
-3 + d + 4d = 12

Combine like terms: d + 4d = 5d
-3 + 5d = 12

Solving
-3 + 5d = 12

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 + 5d = 12 + 3

Combine like terms: -3 + 3 = 0
0 + 5d = 12 + 3
5d = 12 + 3

Combine like terms: 12 + 3 = 15
5d = 15

Divide each side by '5'.
d = 3

Simplifying
d = 3

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