13+d+5=9

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Solution for 13+d+5=9 equation: 


Simplifying
13 + d + 5 = 9

Reorder the terms:
13 + 5 + d = 9

Combine like terms: 13 + 5 = 18
18 + d = 9

Solving
18 + d = 9

Solving for variable 'd'.

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

Add '-18' to each side of the equation.
18 + -18 + d = 9 + -18

Combine like terms: 18 + -18 = 0
0 + d = 9 + -18
d = 9 + -18

Combine like terms: 9 + -18 = -9
d = -9

Simplifying
d = -9

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