7(3+4r)=28

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Solution for 7(3+4r)=28 equation: 



7(3+4r)=28

We move all terms to the left:

7(3+4r)-(28)=0

We add all the numbers together, and all the variables

7(4r+3)-28=0

We multiply parentheses

28r+21-28=0

We add all the numbers together, and all the variables

28r-7=0

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

28r=7

r=7/28

r=1/4

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