d-12+2d+3=18

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Solution for d-12+2d+3=18 equation:


Simplifying
d + -12 + 2d + 3 = 18

Reorder the terms:
-12 + 3 + d + 2d = 18

Combine like terms: -12 + 3 = -9
-9 + d + 2d = 18

Combine like terms: d + 2d = 3d
-9 + 3d = 18

Solving
-9 + 3d = 18

Solving for variable 'd'.

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

Add '9' to each side of the equation.
-9 + 9 + 3d = 18 + 9

Combine like terms: -9 + 9 = 0
0 + 3d = 18 + 9
3d = 18 + 9

Combine like terms: 18 + 9 = 27
3d = 27

Divide each side by '3'.
d = 9

Simplifying
d = 9

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