Question 60667
P+3/4=9/10
P=9/10-3/4  FIND A COMMON DENOMINATOR OF 4 & 10  WHICH IS 20
P=18/20-15/20
P=3/20
PROOF
3/20+3/4=9/10 STILL NEED A  COMMON DENOMINATOR 20 WORKS HERE
3/20+15/20=18/20
18/20=18/20