6(х-0,5)-(х-1)=13 Помогмтя!!!
6 * (х - 0,5) - (х - 1) = 13 6х - 3 - х + 1 = 13 5х = 13 - 1 + 3 5х = 15 х = 15 : 5 х = 3 ------------------------------------ 6 * (3 - 0,5) - (3 - 1) = 13 6 * 2,5 - 3 + 1 = 13 15 - 3 + 1 = 13 13 = 13