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1/2r+8=15
We move all terms to the left:
1/2r+8-(15)=0
Domain of the equation: 2r!=0We add all the numbers together, and all the variables
r!=0/2
r!=0
r∈R
1/2r-7=0
We multiply all the terms by the denominator
-7*2r+1=0
Wy multiply elements
-14r+1=0
We move all terms containing r to the left, all other terms to the right
-14r=-1
r=-1/-14
r=1/14
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