9d-d+d+9=3d

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


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

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

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

Combine like terms: 8d + d = 9d
9 + 9d = 3d

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

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

Combine like terms: 3d + -3d = 0
9 + 6d = 0

Add '-9' to each side of the equation.
9 + -9 + 6d = 0 + -9

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

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

Divide each side by '6'.
d = -1.5

Simplifying
d = -1.5

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