Răspuns:
Explicație pas cu pas:
a) 120/30 = 4
b) 12/144⁽¹² = 1/12
c) 2 si 1/2 / 1 si 1/4 = [(2·2+1)/2] : [(1·4+1)/4] =
= (5/2):(5/4) = 5/2 ·4/5 = 20/10 = 2
d) 0,(2) : 0,(3) = 2/9 : 3/9 = 2/9 · 9/3 = 18/27⁽⁹ = 2/3
e) 2,1(3) : 4/3 = (213-21)/90 : 4/3 =
= 192/90⁽⁶ · 3/4 = 32/15 · 3/4 = 96/60⁽⁶ = 16/10⁽² = 8/5