Решите уравнение:


z-1/3=-7/12


3 5/7+m=2 8/21

z-1/3 = -7/12 z = -7/12 + 1/3 z = -7/12 + 4/12 z = -3/12 z = -1/4 3 5/7+m = 2 8/21 26/7+m = 50/21 m = 50/21-26/7m = 50/21 - 78/21m = - 28/21 m = - 4/3 = - 1 1/3