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.666666r-4=16+2r
We move all terms to the left:
.666666r-4-(16+2r)=0
We add all the numbers together, and all the variables
.666666r-(2r+16)-4=0
We get rid of parentheses
.666666r-2r-16-4=0
We add all the numbers together, and all the variables
-1.333334r-20=0
We move all terms containing r to the left, all other terms to the right
-1.333334r=20
r=20/-1.333334
r=-14+1/1.0000075000525
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