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3/4r+4=1/4r-9
We move all terms to the left:
3/4r+4-(1/4r-9)=0
Domain of the equation: 4r!=0
r!=0/4
r!=0
r∈R
Domain of the equation: 4r-9)!=0We get rid of parentheses
r∈R
3/4r-1/4r+9+4=0
We multiply all the terms by the denominator
9*4r+4*4r+3-1=0
We add all the numbers together, and all the variables
9*4r+4*4r+2=0
Wy multiply elements
36r+16r+2=0
We add all the numbers together, and all the variables
52r+2=0
We move all terms containing r to the left, all other terms to the right
52r=-2
r=-2/52
r=-1/26
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