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1.89+.25r=3.80
We move all terms to the left:
1.89+.25r-(3.80)=0
We add all the numbers together, and all the variables
.25r+1.89-(3.8)=0
We add all the numbers together, and all the variables
.25r-1.91=0
We move all terms containing r to the left, all other terms to the right
.25r=1.91
r=1.91/.25
r=7+0.16/.25
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