9+7d=1

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Solution for 9+7d=1 equation:



9+7d=1
We move all terms to the left:
9+7d-(1)=0
We add all the numbers together, and all the variables
7d+8=0
We move all terms containing d to the left, all other terms to the right
7d=-8
d=-8/7
d=-1+1/7

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