12-d=4d-13

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Solution for 12-d=4d-13 equation:


Simplifying
12 + -1d = 4d + -13

Reorder the terms:
12 + -1d = -13 + 4d

Solving
12 + -1d = -13 + 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.
12 + -1d + -4d = -13 + 4d + -4d

Combine like terms: -1d + -4d = -5d
12 + -5d = -13 + 4d + -4d

Combine like terms: 4d + -4d = 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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