4(3r-4)=4-8(2r+5)

Solution for 4(3r-4)=4-8(2r+5) equation:

4(3r-4)=4-8(2r+5)

We move all terms to the left:

4(3r-4)-(4-8(2r+5))=0

We multiply parentheses

12r-(4-8(2r+5))-16=0


We calculate terms in parentheses: -(4-8(2r+5)), so:

4-8(2r+5)

determiningTheFunctionDomain
-8(2r+5)+4

We multiply parentheses

-16r-40+4

We add all the numbers together, and all the variables

-16r-36

Back to the equation:

-(-16r-36)


We get rid of parentheses

12r+16r+36-16=0

We add all the numbers together, and all the variables

28r+20=0

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

28r=-20

r=-20/28

r=-5/7