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13/7r-3=6/7r
We move all terms to the left:
13/7r-3-(6/7r)=0
Domain of the equation: 7r!=0
r!=0/7
r!=0
r∈R
Domain of the equation: 7r)!=0We add all the numbers together, and all the variables
r!=0/1
r!=0
r∈R
13/7r-(+6/7r)-3=0
We get rid of parentheses
13/7r-6/7r-3=0
We multiply all the terms by the denominator
-3*7r+13-6=0
We add all the numbers together, and all the variables
-3*7r+7=0
Wy multiply elements
-21r+7=0
We move all terms containing r to the left, all other terms to the right
-21r=-7
r=-7/-21
r=1/3
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