8(4r-5)-7r=5(3r-4)

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Solution for 8(4r-5)-7r=5(3r-4) equation: 



8(4r-5)-7r=5(3r-4)

We move all terms to the left:

8(4r-5)-7r-(5(3r-4))=0

We add all the numbers together, and all the variables

-7r+8(4r-5)-(5(3r-4))=0

We multiply parentheses

-7r+32r-(5(3r-4))-40=0



We calculate terms in parentheses: -(5(3r-4)), so:

5(3r-4)

We multiply parentheses

15r-20

Back to the equation:

-(15r-20)



We add all the numbers together, and all the variables

25r-(15r-20)-40=0

We get rid of parentheses

25r-15r+20-40=0

We add all the numbers together, and all the variables

10r-20=0

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

10r=20

r=20/10

r=2

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