3d-3+8+d-d=9+9-1

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Solution for 3d-3+8+d-d=9+9-1 equation: 


Simplifying
3d + -3 + 8 + d + -1d = 9 + 9 + -1

Reorder the terms:
-3 + 8 + 3d + d + -1d = 9 + 9 + -1

Combine like terms: -3 + 8 = 5
5 + 3d + d + -1d = 9 + 9 + -1

Combine like terms: 3d + d = 4d
5 + 4d + -1d = 9 + 9 + -1

Combine like terms: 4d + -1d = 3d
5 + 3d = 9 + 9 + -1

Combine like terms: 9 + 9 = 18
5 + 3d = 18 + -1

Combine like terms: 18 + -1 = 17
5 + 3d = 17

Solving
5 + 3d = 17

Solving for variable 'd'.

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

Add '-5' to each side of the equation.
5 + -5 + 3d = 17 + -5

Combine like terms: 5 + -5 = 0
0 + 3d = 17 + -5
3d = 17 + -5

Combine like terms: 17 + -5 = 12
3d = 12

Divide each side by '3'.
d = 4

Simplifying
d = 4

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