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4(-2.2r-2.3)=-41.6
We move all terms to the left:
4(-2.2r-2.3)-(-41.6)=0
We add all the numbers together, and all the variables
4(-2.2r-2.3)+41.6=0
We multiply parentheses
-8r-9.2+41.6=0
We add all the numbers together, and all the variables
-8r+32.4=0
We move all terms containing r to the left, all other terms to the right
-8r=-32.4
r=-32.4/-8
r=4+0.4/8
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