a) 2.75 + 0.1 * 10/0.25 * 5 = 2.75 + 0.1 * 40 *5 = 2.75 + 4 * 5 = 2.75 + 20 = 22.75
b) 1.4 / (2i2/3 - 1i1/2) * 6 = 1.4 / (2i4/6 - 1i3/6) * 6 = 1.4 : 1i1/6 * 6 = 1i2/5 * (6/7) * 6 = 12/35 * 6 = 72/35 = 2i2/35
c) 2/3 + 1/2 - (0.5 - 0.2)-0.8 * 1/8 = 4/6 + 3/6 - 2.5 - 1/10 = -1i1/6 - 2i3/6 - 1/10 = = -3i40/60 - 6/60 = -3i46/60 = -3i23/30
JEŚLI ZŁY WYNIK TO SPÓJRZ CZY DOBRZE PRZEPISAŁEŚ