(8r+9)+7(4r+3)=4

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Solution for (8r+9)+7(4r+3)=4 equation: 



(8r+9)+7(4r+3)=4

We move all terms to the left:

(8r+9)+7(4r+3)-(4)=0

We multiply parentheses

(8r+9)+28r+21-4=0

We get rid of parentheses

8r+28r+9+21-4=0

We add all the numbers together, and all the variables

36r+26=0

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

36r=-26

r=-26/36

r=-13/18

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