a 4*2 3/5=4*(2+3/5)=4*2+4*3/5=8+12/5=8+2 2/5=10 2/5
b 7*5 1/3= 7*(5+1/3)=7*5+7*1/3=35+7/3=35+2 1/3=37 1/3
c 2*3 4/7=2 * 25/7= 2*25/7=50/7 =7 1/7
d 6*1 5/9=6*14/9=6*14/9=84/9=9 3/9=9 1/3
