28=4(7+8r)-32r

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Solution for 28=4(7+8r)-32r equation: 



28=4(7+8r)-32r

We move all terms to the left:

28-(4(7+8r)-32r)=0

We add all the numbers together, and all the variables

-(4(8r+7)-32r)+28=0



We calculate terms in parentheses: -(4(8r+7)-32r), so:

4(8r+7)-32r

We add all the numbers together, and all the variables

-32r+4(8r+7)

We multiply parentheses

-32r+32r+28

We add all the numbers together, and all the variables

28

Back to the equation:

-(28)



We add all the numbers together, and all the variables

=0

r=0/1

r=0

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