7d-28=3d

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Solution for 7d-28=3d equation:


Simplifying
7d + -28 = 3d

Reorder the terms:
-28 + 7d = 3d

Solving
-28 + 7d = 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.
-28 + 7d + -3d = 3d + -3d

Combine like terms: 7d + -3d = 4d
-28 + 4d = 3d + -3d

Combine like terms: 3d + -3d = 0
-28 + 4d = 0

Add '28' to each side of the equation.
-28 + 28 + 4d = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 4d = 0 + 28
4d = 0 + 28

Combine like terms: 0 + 28 = 28
4d = 28

Divide each side by '4'.
d = 7

Simplifying
d = 7

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