Răspuns:
Explicație pas cu pas:
a) -3/5×10/9×(-15/2)=25/2
b) 7/2×4/7×1/4=1/2
c)-7/3×6/7×3/2=-3
d)-5/6×19/5×30/19=-5
e)64/7×42/128×3/27=1/3
f)55/44×88/77×14/5=5/4×8/7×14/5=16/4=4
