Find a common denominator which is 12
1*3=3 4*3=12 so 3 3/12
then 5*2=10 6*2=12 so 2 10/12
2 10/12+3 3/12= 5 13/12
13/12= 1 1/12 plus 5= 6 1/12
so your answer would be 6 1/12
So do 81 divided by 4 we know that 80 divided by 4 is 20 so it would be 20 and some change
.44/.8=×/1
×=.55
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