d+2d-3=15

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Solution for d+2d-3=15 equation: 


Simplifying
d + 2d + -3 = 15

Reorder the terms:
-3 + d + 2d = 15

Combine like terms: d + 2d = 3d
-3 + 3d = 15

Solving
-3 + 3d = 15

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 + 3d = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 3d = 15 + 3
3d = 15 + 3

Combine like terms: 15 + 3 = 18
3d = 18

Divide each side by '3'.
d = 6

Simplifying
d = 6

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