(46х - 57) : 3 = 27 (19х + 62) : 15 = 13
46х - 57 = 27 * 3 19х + 62 = 13 * 15
46х - 57 = 81 19х = 195
46х = 81 + 57 19х = 195 - 62
46х = 138 19х = 133
х = 138 : 46 х = 133 : 19
х = 3 х = 7
-------------------------- ---------------------------
Проверка: (46 * 3 - 57) : 3 = 27 Проверка: (19 * 7 + 62) : 15 = 13
(138 - 57) : 3 = 27 (133 + 62) : 15 = 13
81 : 3 = 27 195 : 15 = 13
27 = 27 13 = 13