30=-6r+4(1+8r)

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Solution for 30=-6r+4(1+8r) equation: 



30=-6r+4(1+8r)

We move all terms to the left:

30-(-6r+4(1+8r))=0

We add all the numbers together, and all the variables

-(-6r+4(8r+1))+30=0



We calculate terms in parentheses: -(-6r+4(8r+1)), so:

-6r+4(8r+1)

We multiply parentheses

-6r+32r+4

We add all the numbers together, and all the variables

26r+4

Back to the equation:

-(26r+4)



We get rid of parentheses

-26r-4+30=0

We add all the numbers together, and all the variables

-26r+26=0

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

-26r=-26

r=-26/-26

r=1

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