12-8d=20-9d+5

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Solution for 12-8d=20-9d+5 equation:


Simplifying
12 + -8d = 20 + -9d + 5

Reorder the terms:
12 + -8d = 20 + 5 + -9d

Combine like terms: 20 + 5 = 25
12 + -8d = 25 + -9d

Solving
12 + -8d = 25 + -9d

Solving for variable 'd'.

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

Add '9d' to each side of the equation.
12 + -8d + 9d = 25 + -9d + 9d

Combine like terms: -8d + 9d = 1d
12 + 1d = 25 + -9d + 9d

Combine like terms: -9d + 9d = 0
12 + 1d = 25 + 0
12 + 1d = 25

Add '-12' to each side of the equation.
12 + -12 + 1d = 25 + -12

Combine like terms: 12 + -12 = 0
0 + 1d = 25 + -12
1d = 25 + -12

Combine like terms: 25 + -12 = 13
1d = 13

Divide each side by '1'.
d = 13

Simplifying
d = 13

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