3d-9=7-2d

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Solution for 3d-9=7-2d equation:


Simplifying
3d + -9 = 7 + -2d

Reorder the terms:
-9 + 3d = 7 + -2d

Solving
-9 + 3d = 7 + -2d

Solving for variable 'd'.

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

Add '2d' to each side of the equation.
-9 + 3d + 2d = 7 + -2d + 2d

Combine like terms: 3d + 2d = 5d
-9 + 5d = 7 + -2d + 2d

Combine like terms: -2d + 2d = 0
-9 + 5d = 7 + 0
-9 + 5d = 7

Add '9' to each side of the equation.
-9 + 9 + 5d = 7 + 9

Combine like terms: -9 + 9 = 0
0 + 5d = 7 + 9
5d = 7 + 9

Combine like terms: 7 + 9 = 16
5d = 16

Divide each side by '5'.
d = 3.2

Simplifying
d = 3.2

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