78=-4d-9d

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Solution for 78=-4d-9d equation:



78=-4d-9d
We move all terms to the left:
78-(-4d-9d)=0
We add all the numbers together, and all the variables
-(-13d)+78=0
We get rid of parentheses
13d+78=0
We move all terms containing d to the left, all other terms to the right
13d=-78
d=-78/13
d=-6

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