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

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


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

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

Solving
3d = 9 + -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.
3d + 6d = 9 + -6d + 6d

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

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

Divide each side by '9'.
d = 1

Simplifying
d = 1

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