[-3/9+1/7 ×(-1/6+4/10)]:(-36/100)
amplificam -1/6 cu 10 si 4/10 cu 6
[-3/9+1/7 ×(-10/60+24/60)]:(-36/100)
(-3/9+1/7 ×14/60):(-36/100)
(-3/9+2 /60):(-36/100)
amplificam -3/9 cu 20 si 2/60 cu 3
(-60/180+9/180):(-36/100)
(-54/180)×(-100/36)
5/6
a/b este a supra b
