Ответы и объяснения

2014-01-29T23:13:50+04:00
(3.1/8+1.3/4)x=2.1/6
(25/8 + 7/4)X = 13/6
(25/8 +14/8)X = 13/6
39/8*X = 13/6  X = 13/6 : 39/8 = 4/9
2014-01-29T23:14:44+04:00