15d-20d-13d=18

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Solution for 15d-20d-13d=18 equation: 


Simplifying
15d + -20d + -13d = 18

Combine like terms: 15d + -20d = -5d
-5d + -13d = 18

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

Solving
-18d = 18

Solving for variable 'd'.

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

Divide each side by '-18'.
d = -1

Simplifying
d = -1

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