7-5=r-4(2+r)

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Solution for 7-5=r-4(2+r) equation: 



7-5=r-4(2+r)

We move all terms to the left:

7-5-(r-4(2+r))=0

We add all the numbers together, and all the variables

-(r-4(r+2))+7-5=0

We add all the numbers together, and all the variables

-(r-4(r+2))+2=0



We calculate terms in parentheses: -(r-4(r+2)), so:

r-4(r+2)

We multiply parentheses

r-4r-8

We add all the numbers together, and all the variables

-3r-8

Back to the equation:

-(-3r-8)



We get rid of parentheses

3r+8+2=0

We add all the numbers together, and all the variables

3r+10=0

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

3r=-10

r=-10/3

r=-3+1/3

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