Решите уравнения 1) 6 целых 3/11 + x = 10 целых 6/7 2) 9 целых 5/36 - x =2 целых 4/9 3) x - 5 целых 17/60 = 7 целых 9/20

1) 6 3/11 + x = 10 6/7; х = 10 6/7 - 6 3/11;х = 76/7 - 69/11; х = (76 * 11)/(7 * 11) - (69 * 7)/(11 * 7); х = 836/77 - 483/77; х = 353/77. х = 4 45/77. Проверка: 6 3/11 + 353/77 = 10 6/7;69/11 + 353/77 = 10 6/7; (69 * 7)/(11 * 7) + 353/77 = 10 6/7; 483/77 + 353/77 = 10 6/7; 836/77 = 76/7; 76/7 = 76/7. Решение верно.

2) 9 5/36 - x =2 4/9 329/36 - х = 22/9; х = 329/36 - 22/9; х = 329/36 - (22 * 4)/(9 * 4);х = 329/36 - 88/36;х = 241/36; х = 6 25/36. Проверка: 9 5/36 - 6 25/36 = 2 4/9; 8 5/36 + 36/36 - 6 25/36 = 2 4/9; 8 41/36 - 6 25/36 = 2 4/9; 2 16/36 = 2 4/9; 2 4/9 = 2 4/9. Решение верно.

3) x - 5 17/60 = 7 9/20х = 5 17/60 + 7 9/20; х = 317/60 + 149/20; х = 317/60 + (149 * 3)/(20 * 3); х = 317/60 + 447/60; х = 764/60; х = 12 44/60. Проверка: 12 44/60 - 5 17/60 = 7 9/20; 7 27/60 = 7 9/20; 7 9/20 = 7 9/20. Решение верно.