(7/19z - 1/6) * 5/16 = 5/16
7/19z - 1/6 = 5/16 : 5/16
7/19z - 1/6 = 1
7/19z = 1 + 1/6
7/19z = 1 1/6
z = 1 1/6 : 7/19
z = 7/6 * 19/7
z = 3 1/6
ответ: 3 1/6
(7/19z - 1/6) * 5/16 = 5/16
7/19z - 1/6 = 5/16 : 5/16
7/19z - 1/6 = 1
7/19z = 1 + 1/6
7/19z = 1 1/6
z = 1 1/6 : 7/19
z = 7/6 * 19/7
z = 3 1/6
ответ: 3 1/6