3/4 +4/5
find the common denominator which is 20
multiply by 5 for 3/4
(3)(5)/(4)(5)=15/20
multiply by 4 for 4/5
(4)(4)/(5)(4)=16/20
15/20+16/20
=31/20
answer:
31/20, 1 11/20 and 1.55
