Question

(1/3-1/5+1/15):4 ........​

Answer 1

[(1/3)×5-(1/5)×3+1/15]:4=

(5/15-3/15+1/15):4=

3/15:4=

3/15×1/4=3/60=1/20

Answer 2

Răspuns: 1/20

Explicație pas cu pas:

(1/3-1/5+1/15):4  =

(dam numitor comun pe 15 )

(5/15  - 3/15 + 1/15) : 4 =

(5 - 3 + 1)/15  : 4 =

3/15 : 4 =

(simplificam fractia 3/15 cu 3 si vom obtine 1/5 )

1/5 : 4 =

(la impartire al doilea termen se inverseaza )

1/5 x 1/4  =

1/20