1) 8 * (х - 14) = 56 2) (46 - х) * 19 = 418
х - 14 = 56 : 8 46 - х = 418 : 19
х - 14 = 7 46 - х = 22
х = 7 + 14 х = 46 - 22
х = 21 х = 24
3) 9 * (143 - 13х) = 234 4) 17 * (5х - 16) = 238
143 - 13х = 234 : 9 5х - 16 = 238 : 17
143 - 13х = 26 5х - 16 = 14
143 - 26 = 13х 5х = 14 + 16
117 = 13х 5х = 30
х = 117 : 13 х = 30 : 5
х = 9 х = 6
X - во 2 коробке;
(4X - 8)1.5 = X+8;
6X - 12 = X+8;
X=4;
ответ: 4 и 16