Решите уравнение. 1) х + 1(4/9) = 4(2/7); х = 4(2/7) - 1(4/9); х = 4(?/63) - 1(?/63); х = 3(?/63) - 1(?/63); х = ? 2)

1) х + 1(4/9) = 4(2/7);х = 4(2/7) - 1(4/9);х = 4(18/63) - 1(28/63);х = 3(81/63) - 1(28/63);х = 2(53/63).

2) 6(11/12) - х = 3(7/9);х = 6(11/12) - 3(7/9);х = 6(33/36) - 3(28/36);х = 3(5/36).

3) х - 1(3/10) = 2(6/35);х = 2(6/35) + 1(3/10);х = 2(12/70) + 1(21/70);х = 3(33/70).

Ответ: х = 2(53/63). х = 3(5/36). х = 3(33/70).