12d+3+-9d=12+-6d

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Solution for 12d+3+-9d=12+-6d equation:


Simplifying
12d + 3 + -9d = 12 + -6d

Reorder the terms:
3 + 12d + -9d = 12 + -6d

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

Solving
3 + 3d = 12 + -6d

Solving for variable 'd'.

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

Add '6d' to each side of the equation.
3 + 3d + 6d = 12 + -6d + 6d

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

Combine like terms: -6d + 6d = 0
3 + 9d = 12 + 0
3 + 9d = 12

Add '-3' to each side of the equation.
3 + -3 + 9d = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 9d = 12 + -3
9d = 12 + -3

Combine like terms: 12 + -3 = 9
9d = 9

Divide each side by '9'.
d = 1

Simplifying
d = 1

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