7d-3(4d-8)=6d+12-9d

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Solution for 7d-3(4d-8)=6d+12-9d equation:


Simplifying
7d + -3(4d + -8) = 6d + 12 + -9d

Reorder the terms:
7d + -3(-8 + 4d) = 6d + 12 + -9d
7d + (-8 * -3 + 4d * -3) = 6d + 12 + -9d
7d + (24 + -12d) = 6d + 12 + -9d

Reorder the terms:
24 + 7d + -12d = 6d + 12 + -9d

Combine like terms: 7d + -12d = -5d
24 + -5d = 6d + 12 + -9d

Reorder the terms:
24 + -5d = 12 + 6d + -9d

Combine like terms: 6d + -9d = -3d
24 + -5d = 12 + -3d

Solving
24 + -5d = 12 + -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.
24 + -5d + 3d = 12 + -3d + 3d

Combine like terms: -5d + 3d = -2d
24 + -2d = 12 + -3d + 3d

Combine like terms: -3d + 3d = 0
24 + -2d = 12 + 0
24 + -2d = 12

Add '-24' to each side of the equation.
24 + -24 + -2d = 12 + -24

Combine like terms: 24 + -24 = 0
0 + -2d = 12 + -24
-2d = 12 + -24

Combine like terms: 12 + -24 = -12
-2d = -12

Divide each side by '-2'.
d = 6

Simplifying
d = 6

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