Răspuns:
1
Explicație pas cu pas:
[7/5×15/14+3/2:(9/4-3/2)]×2/7=[3/2+3/2:(9/4-6/4)]×2/7=(3/2+3/2×4/3)×2/7=
=(3/2+2)×2/7=7/2×2/7=1