13d+12=8d-13

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Solution for 13d+12=8d-13 equation:


Simplifying
13d + 12 = 8d + -13

Reorder the terms:
12 + 13d = 8d + -13

Reorder the terms:
12 + 13d = -13 + 8d

Solving
12 + 13d = -13 + 8d

Solving for variable 'd'.

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

Add '-8d' to each side of the equation.
12 + 13d + -8d = -13 + 8d + -8d

Combine like terms: 13d + -8d = 5d
12 + 5d = -13 + 8d + -8d

Combine like terms: 8d + -8d = 0
12 + 5d = -13 + 0
12 + 5d = -13

Add '-12' to each side of the equation.
12 + -12 + 5d = -13 + -12

Combine like terms: 12 + -12 = 0
0 + 5d = -13 + -12
5d = -13 + -12

Combine like terms: -13 + -12 = -25
5d = -25

Divide each side by '5'.
d = -5

Simplifying
d = -5

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