7d-3=4d+15

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Solution for 7d-3=4d+15 equation:


Simplifying
7d + -3 = 4d + 15

Reorder the terms:
-3 + 7d = 4d + 15

Reorder the terms:
-3 + 7d = 15 + 4d

Solving
-3 + 7d = 15 + 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.
-3 + 7d + -4d = 15 + 4d + -4d

Combine like terms: 7d + -4d = 3d
-3 + 3d = 15 + 4d + -4d

Combine like terms: 4d + -4d = 0
-3 + 3d = 15 + 0
-3 + 3d = 15

Add '3' to each side of the equation.
-3 + 3 + 3d = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 3d = 15 + 3
3d = 15 + 3

Combine like terms: 15 + 3 = 18
3d = 18

Divide each side by '3'.
d = 6

Simplifying
d = 6

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