8120=7000(1+(2)r)

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Solution for 8120=7000(1+(2)r) equation: 



8120=7000(1+(2)r)

We move all terms to the left:

8120-(7000(1+(2)r))=0

We add all the numbers together, and all the variables

-(7000(2r+1))+8120=0



We calculate terms in parentheses: -(7000(2r+1)), so:

7000(2r+1)

We multiply parentheses

14000r+7000

Back to the equation:

-(14000r+7000)



We get rid of parentheses

-14000r-7000+8120=0

We add all the numbers together, and all the variables

-14000r+1120=0

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

-14000r=-1120

r=-1120/-14000

r=2/25

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