1. Выполните действие:
a) -7.4 - 2.9 = -10.3
б) -4.1 + 2.8 = -1.3
в) 8.7 - 9.4 = -0.7
г) -3.7 + 5.6 = 1.9
д) \(-\frac{3}{8} + \frac{5}{6} = -\frac{9}{24} + \frac{20}{24} = \frac{11}{24}\)
е) \(-3 \frac{5}{9} - 2 \frac{7}{18} = -3 \frac{10}{18} - 2 \frac{7}{18} = -5 \frac{17}{18}\)