-d+4d+4+7d-12=72

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Solution for -d+4d+4+7d-12=72 equation:


Simplifying
-1d + 4d + 4 + 7d + -12 = 72

Reorder the terms:
4 + -12 + -1d + 4d + 7d = 72

Combine like terms: 4 + -12 = -8
-8 + -1d + 4d + 7d = 72

Combine like terms: -1d + 4d = 3d
-8 + 3d + 7d = 72

Combine like terms: 3d + 7d = 10d
-8 + 10d = 72

Solving
-8 + 10d = 72

Solving for variable 'd'.

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

Add '8' to each side of the equation.
-8 + 8 + 10d = 72 + 8

Combine like terms: -8 + 8 = 0
0 + 10d = 72 + 8
10d = 72 + 8

Combine like terms: 72 + 8 = 80
10d = 80

Divide each side by '10'.
d = 8

Simplifying
d = 8

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