6d-4d-d+9=3d

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Solution for 6d-4d-d+9=3d equation:


Simplifying
6d + -4d + -1d + 9 = 3d

Reorder the terms:
9 + 6d + -4d + -1d = 3d

Combine like terms: 6d + -4d = 2d
9 + 2d + -1d = 3d

Combine like terms: 2d + -1d = 1d
9 + 1d = 3d

Solving
9 + 1d = 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 + 1d + -3d = 3d + -3d

Combine like terms: 1d + -3d = -2d
9 + -2d = 3d + -3d

Combine like terms: 3d + -3d = 0
9 + -2d = 0

Add '-9' to each side of the equation.
9 + -9 + -2d = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -2d = 0 + -9
-2d = 0 + -9

Combine like terms: 0 + -9 = -9
-2d = -9

Divide each side by '-2'.
d = 4.5

Simplifying
d = 4.5

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