Ответ:\(5x - 3.8 = 2.7\)\(5x = 2.7 + 3.8 = 6.5\)\(x = 6.5 : 5 = 1.3\).\((x + 2.3) \cdot 4 = 14.8\)\(x + 2.3 = 14.8 : 4 = 3.7\)\(x = 3.7 - 2.3 = 1.4\).Ответ: 1) x = 1,3; 2) x = 1,4.