9d-8=2d+13

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Solution for 9d-8=2d+13 equation:


Simplifying
9d + -8 = 2d + 13

Reorder the terms:
-8 + 9d = 2d + 13

Reorder the terms:
-8 + 9d = 13 + 2d

Solving
-8 + 9d = 13 + 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.
-8 + 9d + -2d = 13 + 2d + -2d

Combine like terms: 9d + -2d = 7d
-8 + 7d = 13 + 2d + -2d

Combine like terms: 2d + -2d = 0
-8 + 7d = 13 + 0
-8 + 7d = 13

Add '8' to each side of the equation.
-8 + 8 + 7d = 13 + 8

Combine like terms: -8 + 8 = 0
0 + 7d = 13 + 8
7d = 13 + 8

Combine like terms: 13 + 8 = 21
7d = 21

Divide each side by '7'.
d = 3

Simplifying
d = 3

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