-28=3d-7d

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Solution for -28=3d-7d equation:


Simplifying
-28 = 3d + -7d

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

Solving
-28 = -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.
-28 + 4d = -4d + 4d

Combine like terms: -4d + 4d = 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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