16+r=7+4r

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Solution for 16+r=7+4r equation: 



16+r=7+4r

We move all terms to the left:

16+r-(7+4r)=0

We add all the numbers together, and all the variables

r-(4r+7)+16=0

We get rid of parentheses

r-4r-7+16=0

We add all the numbers together, and all the variables

-3r+9=0

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

-3r=-9

r=-9/-3

r=+3

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