7(5r+4)=85

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Solution for 7(5r+4)=85 equation: 



7(5r+4)=85

We move all terms to the left:

7(5r+4)-(85)=0

We multiply parentheses

35r+28-85=0

We add all the numbers together, and all the variables

35r-57=0

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

35r=57

r=57/35

r=1+22/35

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