Question

15+12-r=24

Answer 1

Hint: get r by itself

Answer 2

15+12-r=24
(Do 15+12)
27-r=24
(Subtract 27 from both sides)
What do you have at this point?

Answer 3

wow dat was easy thanks alot

Answer 4

yeah, it's simple once you understand what it's asking. :)

Answer 5

What was your final answer, smile?

Answer 6

if you got -r=-3 , that isn't the answer. you still have to make the r positive. So you just mulitply both sides by -1 and you get r=3