1)
х/1,21 = 5/242,
х = 1,21 * 5/242,
х = 121/100 * 5/242,
х = 1/40 (или 0,025),
2)
16,9/(у+1) = 13/10,
у+1 = 16,9 : 13/10,
у+1 = 169/10 * 10/13,
у+1 = 13,
у = 13 - 1,
у = 12
1)
х/1,21 = 5/242,
х = 1,21 * 5/242,
х = 121/100 * 5/242,
х = 1/40 (или 0,025),
2)
16,9/(у+1) = 13/10,
у+1 = 16,9 : 13/10,
у+1 = 169/10 * 10/13,
у+1 = 13,
у = 13 - 1,
у = 12