d+2d+d-3=39

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Solution for d+2d+d-3=39 equation:


Simplifying
d + 2d + d + -3 = 39

Reorder the terms:
-3 + d + 2d + d = 39

Combine like terms: d + 2d = 3d
-3 + 3d + d = 39

Combine like terms: 3d + d = 4d
-3 + 4d = 39

Solving
-3 + 4d = 39

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 + 4d = 39 + 3

Combine like terms: -3 + 3 = 0
0 + 4d = 39 + 3
4d = 39 + 3

Combine like terms: 39 + 3 = 42
4d = 42

Divide each side by '4'.
d = 10.5

Simplifying
d = 10.5

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