3d+8-d=5d-7

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Solution for 3d+8-d=5d-7 equation:


Simplifying
3d + 8 + -1d = 5d + -7

Reorder the terms:
8 + 3d + -1d = 5d + -7

Combine like terms: 3d + -1d = 2d
8 + 2d = 5d + -7

Reorder the terms:
8 + 2d = -7 + 5d

Solving
8 + 2d = -7 + 5d

Solving for variable 'd'.

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

Add '-5d' to each side of the equation.
8 + 2d + -5d = -7 + 5d + -5d

Combine like terms: 2d + -5d = -3d
8 + -3d = -7 + 5d + -5d

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

Add '-8' to each side of the equation.
8 + -8 + -3d = -7 + -8

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

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

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

Simplifying
d = 5

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