Помогите 600 даю 30 баллов

 1) 2 2//3=8//3 (8//3)*(9//32)=0.75 5 1//3=16//3 0.75*(16//3)=4 2) 4 2//5=22//5  22//5=4.4  4.4*(15//77)=(6//7)  7//20=0.35  (6//7)*0.35=0.3 3)  18//25=0.72 0.72*(10//27)=(4//15) 7 1//2=15//2 15//2=7.5 (4//15)*7.5=2 4) 5 2//5=27//5 27//5=5.4 5.4*(40//81)=(8//3) (8//3)*(15//16)=2.5 5) 6 1//4=25//4 1 1//35=36//35 25//4=6.25 6.25*(36//35)=(45//7) 2 1//3=7//3 (45//7)*(7//3)=15 6) 12 6//7=90//7 2//25=0.08 (90//7)*0.08=(36//35) (36//35)*(7//18)=0.4 7)  1 13//27=40//27  (15//16)*(40//27)=(25//18) 2 4//25=54//25  54//25=2.16  (25//18)*2.16=3 8)  3 9//10=39//10  39//10=3.9  3.9*(8//13)=2.4 4 1//6=25//6  2.4*(25//6)=10 9) 8 1//3=25//3  2 1//5=11//5  11//5=2.2  (25//3)*2.2=(55//3) 1 1//11=12//11  (55//3)*(12//11)=20