3d-4+d=8d-(-12)

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


Simplifying
3d + -4 + d = 8d + -1(-12)

Reorder the terms:
-4 + 3d + d = 8d + -1(-12)

Combine like terms: 3d + d = 4d
-4 + 4d = 8d + -1(-12)

Multiply -1 * -12
-4 + 4d = 8d + 12

Reorder the terms:
-4 + 4d = 12 + 8d

Solving
-4 + 4d = 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.
-4 + 4d + -8d = 12 + 8d + -8d

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

Combine like terms: 8d + -8d = 0
-4 + -4d = 12 + 0
-4 + -4d = 12

Add '4' to each side of the equation.
-4 + 4 + -4d = 12 + 4

Combine like terms: -4 + 4 = 0
0 + -4d = 12 + 4
-4d = 12 + 4

Combine like terms: 12 + 4 = 16
-4d = 16

Divide each side by '-4'.
d = -4

Simplifying
d = -4

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