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d-13/9=7
We move all terms to the left:
d-13/9-(7)=0
determiningTheFunctionDomain d-7-13/9=0
We multiply all the terms by the denominator
d*9-13-7*9=0
We add all the numbers together, and all the variables
d*9-76=0
Wy multiply elements
9d-76=0
We move all terms containing d to the left, all other terms to the right
9d=76
d=76/9
d=8+4/9
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