7d-1=3d+7

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Solution for 7d-1=3d+7 equation:


Simplifying
7d + -1 = 3d + 7

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

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

Solving
-1 + 7d = 7 + 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.
-1 + 7d + -3d = 7 + 3d + -3d

Combine like terms: 7d + -3d = 4d
-1 + 4d = 7 + 3d + -3d

Combine like terms: 3d + -3d = 0
-1 + 4d = 7 + 0
-1 + 4d = 7

Add '1' to each side of the equation.
-1 + 1 + 4d = 7 + 1

Combine like terms: -1 + 1 = 0
0 + 4d = 7 + 1
4d = 7 + 1

Combine like terms: 7 + 1 = 8
4d = 8

Divide each side by '4'.
d = 2

Simplifying
d = 2

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