Question

х/72-13/72=29/72 и (29/42-а)-13/42=11/42

Answer 1

1)
х/72 -13/72 = 29/72
х/72 = 29/72 + 13/72
х/72 = 42/72
х = 42*72/72
х = 42

2)
(29/42 - а) - 13/42 = 11/42
29/42 - а = 11/42 + 13/42
29/42 - а = 24/42
а = 29/42 - 24/42
а = 5/42

Answer 2

Спасибо ;)

Answer 3

не за что

Answer 4

х/72 - 13/72 = 29/72
х/72 = 29/72 + 13/72
х/72 = 42/72
х=42

(29/42 - а) - 13/42 = 11/42
29/42 - а = 11/42 + 13/42
29/42 - а = 24/42
а=29/42 - 24/42
а = 5/42