7r+9=2r-3=4r

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Solution for 7r+9=2r-3=4r equation: 



7r+9=2r-3=4r

We move all terms to the left:

7r+9-(2r-3)=0

We get rid of parentheses

7r-2r+3+9=0

We add all the numbers together, and all the variables

5r+12=0

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

5r=-12

r=-12/5

r=-2+2/5

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