Question

помогите с первыми двумя заданиями

Answer 1

22)

1 7/20 : 2,7 + 2,7 :1,35 + (0,4:2 1/2) * (4,2-1 3/40)

27/20 : 27/10 + 27/10 :135/100 + (4/10 :5/2) (42/10 - 43/40)

27*10/20*27 + 27*100/10*135 + (4*2/10*5) (168-43/40)

1/2 + 10/5 + 4/25 * 125/40

1/2 + 10/5 + 4*125/25*40

1/2+10/5+25/10

5+20+25/10

50/10 = 5

Answer 2

23)

Answer 3

(10/1 : 8/2 + 75/10 : 10/1) (3/40-7/30 * 25/100 + 157/360); (10*3/1*8 + 75*1/10*10) (3/40 - 7*25/30*100 + 157/360); (15/4 + 15/20) (3/40 - 7/120 + 157/360); (75+15/20) 27-21+157/360); 9/2 * 163/360 = 163/80 = 2 3/80