-207=-7(1+6r)+2r

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Solution for -207=-7(1+6r)+2r equation: 



-207=-7(1+6r)+2r

We move all terms to the left:

-207-(-7(1+6r)+2r)=0

We add all the numbers together, and all the variables

-(-7(6r+1)+2r)-207=0



We calculate terms in parentheses: -(-7(6r+1)+2r), so:

-7(6r+1)+2r

We add all the numbers together, and all the variables

2r-7(6r+1)

We multiply parentheses

2r-42r-7

We add all the numbers together, and all the variables

-40r-7

Back to the equation:

-(-40r-7)



We get rid of parentheses

40r+7-207=0

We add all the numbers together, and all the variables

40r-200=0

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

40r=200

r=200/40

r=5

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