7d+d+5d+7=4d

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Solution for 7d+d+5d+7=4d equation:


Simplifying
7d + d + 5d + 7 = 4d

Reorder the terms:
7 + 7d + d + 5d = 4d

Combine like terms: 7d + d = 8d
7 + 8d + 5d = 4d

Combine like terms: 8d + 5d = 13d
7 + 13d = 4d

Solving
7 + 13d = 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
7 + 13d + -4d = 4d + -4d

Combine like terms: 13d + -4d = 9d
7 + 9d = 4d + -4d

Combine like terms: 4d + -4d = 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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