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0.6(5+6.6r)+0.4r=4.3r-1.479(11.4-13.65r)
We move all terms to the left:
0.6(5+6.6r)+0.4r-(4.3r-1.479(11.4-13.65r))=0
We add all the numbers together, and all the variables
0.6(6.6r+5)+0.4r-(4.3r-1.479(-13.65r+11.4))=0
We add all the numbers together, and all the variables
0.4r+0.6(6.6r+5)-(4.3r-1.479(-13.65r+11.4))=0
We multiply parentheses
0.4r+3.6r-(4.3r-1.479(-13.65r+11.4))+3=0
We calculate terms in parentheses: -(4.3r-1.479(-13.65r+11.4)), so:We add all the numbers together, and all the variables
4.3r-1.479(-13.65r+11.4)
We multiply parentheses
4.3r+19.227r-16.8606
We add all the numbers together, and all the variables
23.527r-16.8606
Back to the equation:
-(23.527r-16.8606)
4r-(23.527r-16.8606)+3=0
We get rid of parentheses
4r-23.527r+16.8606+3=0
We add all the numbers together, and all the variables
-19.527r+19.8606=0
We move all terms containing r to the left, all other terms to the right
-19.527r=-19.8606
r=-19.8606/-19.527
r=1+0.3336/19.527
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