12d-9d-1=17

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Solution for 12d-9d-1=17 equation:


Simplifying
12d + -9d + -1 = 17

Reorder the terms:
-1 + 12d + -9d = 17

Combine like terms: 12d + -9d = 3d
-1 + 3d = 17

Solving
-1 + 3d = 17

Solving for variable 'd'.

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

Add '1' to each side of the equation.
-1 + 1 + 3d = 17 + 1

Combine like terms: -1 + 1 = 0
0 + 3d = 17 + 1
3d = 17 + 1

Combine like terms: 17 + 1 = 18
3d = 18

Divide each side by '3'.
d = 6

Simplifying
d = 6

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