-5(5-r)=3(r-7)

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

-5(5-r)=3(r-7)

We move all terms to the left:

-5(5-r)-(3(r-7))=0

We add all the numbers together, and all the variables

-5(-1r+5)-(3(r-7))=0

We multiply parentheses

5r-(3(r-7))-25=0


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

3(r-7)

We multiply parentheses

3r-21

Back to the equation:

-(3r-21)


We get rid of parentheses

5r-3r+21-25=0

We add all the numbers together, and all the variables

2r-4=0

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

2r=4

r=4/2

r=2