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698=r*304.8
We move all terms to the left:
698-(r*304.8)=0
We add all the numbers together, and all the variables
-(+r*304.8)+698=0
We get rid of parentheses
-r*304.8+698=0
Wy multiply elements
-304.8r+698=0
We move all terms containing r to the left, all other terms to the right
-304.8r=-698
r=-698/-304.8
r=2+10.52380952381/36.285714285714
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