Решите уравнение 2/3(x-3)-3/5(x-10)=5
2/3(х - 3) - 3/5(х - 10) = 5 2/3х - 2 - 3/5х + 6 = 5 10/15х - 9/15х = 5 + 2 - 6 1/15х = 1 х = 1 : 1/15 х = 1 * 15/1 х = 15 ----------------------------- Проверка: 2/3(15-3) - 3/5(15-10) = 5 2/3 * 12 - 3/5 * 5 = 5 8 - 3 = 5 5 = 5