3(4r+5)-2(3r+4=7)

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Solution for 3(4r+5)-2(3r+4=7) equation: 



3(4r+5)-2(3r+4=7)

We move all terms to the left:

3(4r+5)-2(3r+4-(7))=0

We add all the numbers together, and all the variables

3(4r+5)-2(3r-3)=0

We multiply parentheses

12r-6r+15+6=0

We add all the numbers together, and all the variables

6r+21=0

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

6r=-21

r=-21/6

r=-3+1/2

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