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0,3(2r-3)=0,2r,9
We simplify the equation to the form, which is simple to understand
0,3(2r-3)=0,2r,9
Reorder the terms in parentheses
+( + 0.6r-0.9)=0,2r,9
Remove unnecessary parentheses
+ 0.6r-0.9=0,2r,9
We move all terms containing r to the left and all other terms to the right.
+ 0.6r-0.2r=0.9 + 0.9
We simplify left and right side of the equation.
+ 0.4r=+1.8
We divide both sides of the equation by 0.4 to get r.
r=4.5
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