4r+1.8=9

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Solution for 4r+1.8=9 equation:



4r+1.8=9
We move all terms to the left:
4r+1.8-(9)=0
We add all the numbers together, and all the variables
4r-7.2=0
We move all terms containing r to the left, all other terms to the right
4r=7.2
r=7.2/4
r=1+2.6666666666667/3.3333333333333

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