3d+15=9

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Solution for 3d+15=9 equation: 


Simplifying
3d + 15 = 9

Reorder the terms:
15 + 3d = 9

Solving
15 + 3d = 9

Solving for variable 'd'.

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

Add '-15' to each side of the equation.
15 + -15 + 3d = 9 + -15

Combine like terms: 15 + -15 = 0
0 + 3d = 9 + -15
3d = 9 + -15

Combine like terms: 9 + -15 = -6
3d = -6

Divide each side by '3'.
d = -2

Simplifying
d = -2

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