9=7d+39

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Solution for 9=7d+39 equation:



9=7d+39
We move all terms to the left:
9-(7d+39)=0
We get rid of parentheses
-7d-39+9=0
We add all the numbers together, and all the variables
-7d-30=0
We move all terms containing d to the left, all other terms to the right
-7d=30
d=30/-7
d=-4+2/7

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