9d-1d+2d-9=4d

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Solution for 9d-1d+2d-9=4d equation:


Simplifying
9d + -1d + 2d + -9 = 4d

Reorder the terms:
-9 + 9d + -1d + 2d = 4d

Combine like terms: 9d + -1d = 8d
-9 + 8d + 2d = 4d

Combine like terms: 8d + 2d = 10d
-9 + 10d = 4d

Solving
-9 + 10d = 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
-9 + 10d + -4d = 4d + -4d

Combine like terms: 10d + -4d = 6d
-9 + 6d = 4d + -4d

Combine like terms: 4d + -4d = 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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