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r-49/10=4
We move all terms to the left:
r-49/10-(4)=0
determiningTheFunctionDomain r-4-49/10=0
We multiply all the terms by the denominator
r*10-49-4*10=0
We add all the numbers together, and all the variables
r*10-89=0
Wy multiply elements
10r-89=0
We move all terms containing r to the left, all other terms to the right
10r=89
r=89/10
r=8+9/10
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