Question

Ex 2,3 dau coroana pls repede ca vine mama​

Answer 1

Răspuns:

2.

a)Numitor comun 15

4/15 + (2•5)/15 = 14/15

b)Numitor comun 93

16/93 + (6•3)/93 = 34/93

c)Numitor comun 32

7/32 - (1•2)/32 = 5/32

d)Numitor comun 42

23/42 - (3•5)/42 = 8/42 = 4/21

3.

a)Numitor comun 24

[(5•2)+5]/24 = 15/24 = 5/8

b)Numitor comun 42

[(26•2)+(13•3)]/42 = 91/42

c)Numitor comun 60

[(4•4)+(3•3)]/60 = 25/60 = 5/12

d)Numitor comun 24

(5+1•2+3•3)/24 = 16/24 = 2/3

e)Numitor comun 60

[(7•2)-(3•3)]/60 = 5/60 = 1/12

f)Numitor comun 60

[(8•4)-(9•3)]/60 = 5/60 = 1/12

g)Numitor comun 105

[(8•5)-(4•3)]/105 = 28/105 = 4/15

h)Numitor comun 12

[(7•2)-(3•3)-1]/12 = 4/12 = 1/3