3d+8=7d-4

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Solution for 3d+8=7d-4 equation:


Simplifying
3d + 8 = 7d + -4

Reorder the terms:
8 + 3d = 7d + -4

Reorder the terms:
8 + 3d = -4 + 7d

Solving
8 + 3d = -4 + 7d

Solving for variable 'd'.

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

Add '-7d' to each side of the equation.
8 + 3d + -7d = -4 + 7d + -7d

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

Combine like terms: 7d + -7d = 0
8 + -4d = -4 + 0
8 + -4d = -4

Add '-8' to each side of the equation.
8 + -8 + -4d = -4 + -8

Combine like terms: 8 + -8 = 0
0 + -4d = -4 + -8
-4d = -4 + -8

Combine like terms: -4 + -8 = -12
-4d = -12

Divide each side by '-4'.
d = 3

Simplifying
d = 3

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