Question

What is the answer to 3 1/2r=28

Answer 1

So you change 3 1/2 to 3.5 then divide 28 and 3.5 so it will make r=8

Answer 2

3 1/2r=28
3.5r=28
cross of 3.5 and r remains
divide 28 and 3.5
and r=8
r=8