7+8d=3d-8

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Solution for 7+8d=3d-8 equation:


Simplifying
7 + 8d = 3d + -8

Reorder the terms:
7 + 8d = -8 + 3d

Solving
7 + 8d = -8 + 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 + 8d + -3d = -8 + 3d + -3d

Combine like terms: 8d + -3d = 5d
7 + 5d = -8 + 3d + -3d

Combine like terms: 3d + -3d = 0
7 + 5d = -8 + 0
7 + 5d = -8

Add '-7' to each side of the equation.
7 + -7 + 5d = -8 + -7

Combine like terms: 7 + -7 = 0
0 + 5d = -8 + -7
5d = -8 + -7

Combine like terms: -8 + -7 = -15
5d = -15

Divide each side by '5'.
d = -3

Simplifying
d = -3

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