Решите уравнение (3 - 4/7)*x = 5 целых 2/3
3х-4/7х=5 2/3 2 7/7х-4/7х=5 2/3 2 3/7х=17/3 17/7х=17/3 х=17/3:17/7 х=17/3*7/17 х=7/3 х=2 1/3