98=3r+2(5-7r)

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Solution for 98=3r+2(5-7r) equation: 



98=3r+2(5-7r)

We move all terms to the left:

98-(3r+2(5-7r))=0

We add all the numbers together, and all the variables

-(3r+2(-7r+5))+98=0



We calculate terms in parentheses: -(3r+2(-7r+5)), so:

3r+2(-7r+5)

We multiply parentheses

3r-14r+10

We add all the numbers together, and all the variables

-11r+10

Back to the equation:

-(-11r+10)



We get rid of parentheses

11r-10+98=0

We add all the numbers together, and all the variables

11r+88=0

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

11r=-88

r=-88/11

r=-8

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