d+7d-3d=15

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Solution for d+7d-3d=15 equation: 


Simplifying
d + 7d + -3d = 15

Combine like terms: d + 7d = 8d
8d + -3d = 15

Combine like terms: 8d + -3d = 5d
5d = 15

Solving
5d = 15

Solving for variable 'd'.

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

Divide each side by '5'.
d = 3

Simplifying
d = 3

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