4(1+2r)+5r=82

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Solution for 4(1+2r)+5r=82 equation: 



4(1+2r)+5r=82

We move all terms to the left:

4(1+2r)+5r-(82)=0

We add all the numbers together, and all the variables

4(2r+1)+5r-82=0

We add all the numbers together, and all the variables

5r+4(2r+1)-82=0

We multiply parentheses

5r+8r+4-82=0

We add all the numbers together, and all the variables

13r-78=0

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

13r=78

r=78/13

r=6

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