28=4(3d+3)-4d

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Solution for 28=4(3d+3)-4d equation:


Simplifying
28 = 4(3d + 3) + -4d

Reorder the terms:
28 = 4(3 + 3d) + -4d
28 = (3 * 4 + 3d * 4) + -4d
28 = (12 + 12d) + -4d

Combine like terms: 12d + -4d = 8d
28 = 12 + 8d

Solving
28 = 12 + 8d

Solving for variable 'd'.

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

Add '-8d' to each side of the equation.
28 + -8d = 12 + 8d + -8d

Combine like terms: 8d + -8d = 0
28 + -8d = 12 + 0
28 + -8d = 12

Add '-28' to each side of the equation.
28 + -28 + -8d = 12 + -28

Combine like terms: 28 + -28 = 0
0 + -8d = 12 + -28
-8d = 12 + -28

Combine like terms: 12 + -28 = -16
-8d = -16

Divide each side by '-8'.
d = 2

Simplifying
d = 2

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