Ниже, только 1)
Объяснение:
1.1) (2*3-1)/3 = 5/3
1.2) (2*1-1)/3 = 1/3
1.3) (2*(-5)-1)/3 = -11/3
1.4) (2*(1/2)-1)/3 = 0/3 = 0
1.5) (2*1,6 - 1)/3 = 2,2/3 = 2*1/5 / 3 = 11/5 * 1/3 = 11/15
1.6) (2*100 - 1)/3 = 199/3
