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-4.9r+19.63=-19.5-12.5r-15.59
We move all terms to the left:
-4.9r+19.63-(-19.5-12.5r-15.59)=0
We add all the numbers together, and all the variables
-4.9r-(-12.5r-35.09)+19.63=0
We get rid of parentheses
-4.9r+12.5r+35.09+19.63=0
We add all the numbers together, and all the variables
7.6r+54.72=0
We move all terms containing r to the left, all other terms to the right
7.6r=-54.72
r=-54.72/7.6
r=-7+1/5
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