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-29=3-8r
We move all terms to the left:
-29-(3-8r)=0
We add all the numbers together, and all the variables
-(-8r+3)-29=0
We get rid of parentheses
8r-3-29=0
We add all the numbers together, and all the variables
8r-32=0
We move all terms containing r to the left, all other terms to the right
8r=32
r=32/8
r=4
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