Решите уравнение :) 2/5z+2/3z-7/15z=2 целых 1/2
2/5z+2/3z-7/15z=2 1/2 2 1/15 - 7/15=2 1/2 2 8/15z=2 1/2 z=2 8/15 : 2 1/2 z=1 1/75
2/5z+2/3z-7/15z=2 1/2 (6+10-7)z=5/2 3z=5/2 z=5/2:3 z=5/2*1/3 z=5/6