How do you solve 3r - 5= 2( 4r - 9)?

1 Answer

r=2.6

Explanation:

3r-5=2(4r-9)

Expand the brackets.

3r-5=8r-18

Move all r variables to one side.

-5=5r-18

Add 18 in order to find what 5r equals.

13=5r

Now divide by 5 to find the value of r.

r=2.6