3+4r=7+5r

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Solution for 3+4r=7+5r equation: 



3+4r=7+5r

We move all terms to the left:

3+4r-(7+5r)=0

We add all the numbers together, and all the variables

4r-(5r+7)+3=0

We get rid of parentheses

4r-5r-7+3=0

We add all the numbers together, and all the variables

-1r-4=0

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

-r=4

r=4/-1

r=-4

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