8 minus 4 3/3 so make 8 as a fraction which will be 8/1 minus 4 3/4 than find the common denominator so multiply 8/1 by 4 than u get 32/4 so u basically multiply top and bottom by 4 to get common denominator than u turn 4 4/3 to improper fraction so do 4 times 4 which is 16 and add 3 which is 19/4 now real simple subtract 32/4 minus 19/4= 13/4 also if u subtract 43-8 u get 31/4 this is another way hope this helps:)
