Question

Сократите: 1)4*5/25*6 2)8*13/39*2 3)3*38/19*27 4)2*3*4*5/4*5*6*7 5)6*7*8*9*10/7*9*11*12 6)3*16-8*3/27 7)9*13+9*2/54*13 8)27*15-7*27/54*13 9)24*2+6*24/60*7-5*60 P.S. это не деление, а дробь

Answer 1

1)4*5/25*6=(2*2*5)/(5*5*3*2)=2/(5*3)=2/15

2)8*13/39*2=(2*4*13)/(3*13*2)=4/3= 1  1/3 

3)3*38/19*27=(3*2*19)/(19*3*9)=2/9

4)2*3*4*5/4*5*6*7 =(6*4*5)/(4*5*6*7)=1/7

5)(6*7*8*9*2*5)/(7*9*11*6*2)=8*5/11=40/11=3  3/7

6)3*(16-8)/(3*9)=(16-8)/9=8/9

7)9*(13+2)/(9*6*13)=15/(3*2*13)=5*3/(3*26)=5/26

8)27*(15-7)/(27*2*13)=8/(2*13)=4/13

9)24*2(1+3)/60*(7-5)=12*2*2*4/(12*5*2)=8/5=1,6

Answer 2

1) 4*5/25*6 = (4*5)/(25*6) = 20/150 = 2/15 2) 8*13/39*2 = (8*13)/(39*2) = 104/78 = 4/3 3) 3*38/19*27 = (3*38)/(19*27) = 114/513 4) 2*3*4*5/4*5*6*7 = (2*3*4*5)/(4*5*6*7) = 120/840 = 1/7 5) 6*7*8*9*10/7*9*11*12 = (6*7*8*9*10)/(7*9*11*12) = 30240/83160 = 4/11 6) 3*16-8*3/27 = (3*16 - 8*3)/27 = (48-24)/27 = 24/27 = 8/9 7) 9*13+9*2/54*13 = (9*13 + 9*2)/(54*13) = (117 + 18)/702 = 135/702 = 15/78 = 5/26 8) 27*15-7*27/54*13 = (27*15 - 7*27)/(54*13) = (405-189)/702 = 216/702 = 36/117 = 12/39 = 4/13 9) 24*2+6*24/60*7-5*60 = (24*2 + 6*24)/(60*7 - 5*60) = (48 + 144)/(420 - 300) = 192/120 = 8/5