70=3(5-3r)+8(3+5r)

Solution for 70=3(5-3r)+8(3+5r) equation:

70=3(5-3r)+8(3+5r)

We move all terms to the left:

70-(3(5-3r)+8(3+5r))=0

We add all the numbers together, and all the variables

-(3(-3r+5)+8(5r+3))+70=0


We calculate terms in parentheses: -(3(-3r+5)+8(5r+3)), so:

3(-3r+5)+8(5r+3)

We multiply parentheses

-9r+40r+15+24

We add all the numbers together, and all the variables

31r+39

Back to the equation:

-(31r+39)


We get rid of parentheses

-31r-39+70=0

We add all the numbers together, and all the variables

-31r+31=0

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

-31r=-31

r=-31/-31

r=1