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-0.25=0.5-0.25r
We move all terms to the left:
-0.25-(0.5-0.25r)=0
We add all the numbers together, and all the variables
-(-0.25r+0.5)-0.25=0
We get rid of parentheses
0.25r-0.5-0.25=0
We add all the numbers together, and all the variables
0.25r-0.75=0
We move all terms containing r to the left, all other terms to the right
0.25r=0.75
r=0.75/0.25
r=3
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