Răspuns:
Explicație pas cu pas:
d)
= 3/4 x (1/9) x 6
= 1/12 x 6
= 6/12
= 1/2
e)
= (3x5+1)/5 : (3x3+1)/3 : 1/25
= 16//5 : 10/3 : 1/25
= 16/5 x 3/10 x 25
= 48/50 x 25
= 48/2
= 24
f)
= 21 : (3x9+1)/9 : 3/4
= 21 : 28/9 : 3/4
= 21 x 9/28 x 4/3
= 3 x 9/4 x 4/3
= 9