d+15=13

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Solution for d+15=13 equation: 


Simplifying
d + 15 = 13

Reorder the terms:
15 + d = 13

Solving
15 + d = 13

Solving for variable 'd'.

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

Add '-15' to each side of the equation.
15 + -15 + d = 13 + -15

Combine like terms: 15 + -15 = 0
0 + d = 13 + -15
d = 13 + -15

Combine like terms: 13 + -15 = -2
d = -2

Simplifying
d = -2

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