Răspuns
Salut !
2 intregi si 1/2 = 2 x 2 + 1 = 5/2
2/3 x 5/2 - 5/9 x 3/4 = 10/6 - 15/36 = 60 / 36 - 15/36 = 45/36 ( 9 = 5/4
Succes !
#Albert1001001
