3+8r=7(2r-3)

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Solution for 3+8r=7(2r-3) equation: 



3+8r=7(2r-3)

We move all terms to the left:

3+8r-(7(2r-3))=0



We calculate terms in parentheses: -(7(2r-3)), so:

7(2r-3)

We multiply parentheses

14r-21

Back to the equation:

-(14r-21)



We get rid of parentheses

8r-14r+21+3=0

We add all the numbers together, and all the variables

-6r+24=0

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

-6r=-24

r=-24/-6

r=+4

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