38-7r=3(7-4r)

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Solution for 38-7r=3(7-4r) equation: 



38-7r=3(7-4r)

We move all terms to the left:

38-7r-(3(7-4r))=0

We add all the numbers together, and all the variables

-7r-(3(-4r+7))+38=0



We calculate terms in parentheses: -(3(-4r+7)), so:

3(-4r+7)

We multiply parentheses

-12r+21

Back to the equation:

-(-12r+21)



We get rid of parentheses

-7r+12r-21+38=0

We add all the numbers together, and all the variables

5r+17=0

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

5r=-17

r=-17/5

r=-3+2/5

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