First, you add 4+2=6 Next, you have to add the 3/4 +5/6 to do so find the lowest common denominator. LCD=12 Then multiply the first top number by 3 and the other top number by 2 to get 9/12+10/12=19/12 You get an improper fraction. You have o change t to a mixed fraction. 19/12= 1 7/12 Now you add 1+6=7