4r+8=7,2+5r

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Solution for 4r+8=7,2+5r equation: 



4r+8=7.2+5r

We move all terms to the left:

4r+8-(7.2+5r)=0

We add all the numbers together, and all the variables

4r-(5r+7.2)+8=0

We get rid of parentheses

4r-5r-7.2+8=0

We add all the numbers together, and all the variables

-1r+0.8=0

We move all terms containing r to the left, all other terms to the right

-r=-0.8

r=-0.8/-1

r=0.8/1

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