3-7r=8+2(5-10r)

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Solution for 3-7r=8+2(5-10r) equation: 



3-7r=8+2(5-10r)

We move all terms to the left:

3-7r-(8+2(5-10r))=0

We add all the numbers together, and all the variables

-7r-(8+2(-10r+5))+3=0



We calculate terms in parentheses: -(8+2(-10r+5)), so:

8+2(-10r+5)

determiningTheFunctionDomain
2(-10r+5)+8

We multiply parentheses

-20r+10+8

We add all the numbers together, and all the variables

-20r+18

Back to the equation:

-(-20r+18)



We get rid of parentheses

-7r+20r-18+3=0

We add all the numbers together, and all the variables

13r-15=0

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

13r=15

r=15/13

r=1+2/13

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