7d+d+4d+7=3d

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Solution for 7d+d+4d+7=3d equation:


Simplifying
7d + d + 4d + 7 = 3d

Reorder the terms:
7 + 7d + d + 4d = 3d

Combine like terms: 7d + d = 8d
7 + 8d + 4d = 3d

Combine like terms: 8d + 4d = 12d
7 + 12d = 3d

Solving
7 + 12d = 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
7 + 12d + -3d = 3d + -3d

Combine like terms: 12d + -3d = 9d
7 + 9d = 3d + -3d

Combine like terms: 3d + -3d = 0
7 + 9d = 0

Add '-7' to each side of the equation.
7 + -7 + 9d = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 9d = 0 + -7
9d = 0 + -7

Combine like terms: 0 + -7 = -7
9d = -7

Divide each side by '9'.
d = -0.7777777778

Simplifying
d = -0.7777777778

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