\frac{19}{25} : (-0.38) + \frac{7}{10} = \frac{19}{25} : (-\frac{38}{100}) + \frac{7}{10} = \frac{19}{25} \cdot (-\frac{100}{38}) + \frac{7}{10} = \frac{19}{25} \cdot (-\frac{50}{19}) + \frac{7}{10} = -2 + \frac{7}{10} = -2 + 0.7 = -1.3
Ответ: -1.3