-9=7+d

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Solution for -9=7+d equation:



-9=7+d
We move all terms to the left:
-9-(7+d)=0
We add all the numbers together, and all the variables
-(d+7)-9=0
We get rid of parentheses
-d-7-9=0
We add all the numbers together, and all the variables
-1d-16=0
We move all terms containing d to the left, all other terms to the right
-d=16
d=16/-1
d=-16

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