12(3+r)=5(2r+8)

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Solution for 12(3+r)=5(2r+8) equation: 



12(3+r)=5(2r+8)

We move all terms to the left:

12(3+r)-(5(2r+8))=0

We add all the numbers together, and all the variables

12(r+3)-(5(2r+8))=0

We multiply parentheses

12r-(5(2r+8))+36=0



We calculate terms in parentheses: -(5(2r+8)), so:

5(2r+8)

We multiply parentheses

10r+40

Back to the equation:

-(10r+40)



We get rid of parentheses

12r-10r-40+36=0

We add all the numbers together, and all the variables

2r-4=0

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

2r=4

r=4/2

r=2

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