-15=9d-12d

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Solution for -15=9d-12d equation:


Simplifying
-15 = 9d + -12d

Combine like terms: 9d + -12d = -3d
-15 = -3d

Solving
-15 = -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.
-15 + 3d = -3d + 3d

Combine like terms: -3d + 3d = 0
-15 + 3d = 0

Add '15' to each side of the equation.
-15 + 15 + 3d = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 3d = 0 + 15
3d = 0 + 15

Combine like terms: 0 + 15 = 15
3d = 15

Divide each side by '3'.
d = 5

Simplifying
d = 5

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