Question

va rog ajutor!!dau coroana!!urgent!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

3,25 = 325/100 = 13/4

2 5/7 = 19/7

(13/4)/(19/7) = 13/4 : 19/7 = 13/4*7/19 = 13*7/4*19 = 91/76

b)

3,16 = 316/100 = 79/25

3,1(6) = (316 - 31)/90 = 285/90 = 57/18

(79/25)/(57/18) = 79/25 : 57/18 = 79/25*18/57 = 79*18/25*57 = 1422/1425

c)

4,(2) = (42 - 4)/9 = 38/9

4,1(3) = (413 - 41)/90 = 372/90 = 186/45

(38/9) / (186/45) = 38/9*45/186 = 19*5/93 = 95/93

d)

2 7/15 = 37/15

(37/15) / 20 = 37/15 : 20 = 37/15 *1/20 = 37/300

e)

4 1/5 = 21/5

31 / (21/5) = 31 : 21/5 = 31*5/21 = 155/21

f)

3,16 = 316/100 = 79/25

(79/25)/42 = 79/25 : 42 = 79/25*1/42 = 79/25*42 = 79/1050

g)

(31/20) / (62/45) = 31/20 : 62/45 = 31/20 * 45/62 = 9/8

h)

se rezolva exact ca g) Succes!