0.2(r+50)-6=0.4(3r+20)

Solution for 0.2(r+50)-6=0.4(3r+20) equation:

0.2(r+50)-6=0.4(3r+20)

We move all terms to the left:

0.2(r+50)-6-(0.4(3r+20))=0

We multiply parentheses

0.2r-(0.4(3r+20))+10-6=0


We calculate terms in parentheses: -(0.4(3r+20)), so:

0.4(3r+20)

We multiply parentheses

1.2r+8

Back to the equation:

-(1.2r+8)


We add all the numbers together, and all the variables

0.2r-(1.2r+8)+4=0

We get rid of parentheses

0.2r-1.2r-8+4=0

We add all the numbers together, and all the variables

-1r-4=0

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

-r=4

r=4/-1

r=-4