A) \[-0.9 + 3 = 2.1\]
Б) \[\frac{4}{5} - 1.2 = \frac{4}{5} - \frac{12}{10} = \frac{8}{10} - \frac{12}{10} = -\frac{4}{10} = -0.4\]
B) \[-1.2 + 0.3 = -0.9\]
Г) \[-1 \frac{2}{3} + 5 \frac{1}{6} = -\frac{5}{3} + \frac{31}{6} = -\frac{10}{6} + \frac{31}{6} = \frac{21}{6} = 3.5\]
Д) \[-10.2 - 8 = -18.2\]
E) \[-1 \frac{1}{2} - 2.5 = -1.5 - 2.5 = -4\]
Ë) \[-2.4 - 0.26 = -2.66\]
Ж) \[-2.4 + 0.26 = -2.14\]
3) \[-1 \frac{7}{15} - 3 \frac{5}{6} = -\frac{22}{15} - \frac{23}{6} = -\frac{44}{30} - \frac{115}{30} = -\frac{159}{30} = -5.3\]
И) \[-5 + 4.3 = -0.7\]
Й) \[-(\frac{8}{9} + \frac{2}{6}) = -(\frac{8}{9} + \frac{1}{3}) = -(\frac{8}{9} + \frac{3}{9}) = -\frac{11}{9} = -1 \frac{2}{9} \approx -1.22\]
К) \[0.04 - 0.2 = -0.16\]
Л) \[\frac{11}{35} + \frac{1}{21} = \frac{33}{105} + \frac{5}{105} = \frac{38}{105} \approx 0.36\]
M) \[\frac{11}{35} - \frac{1}{21} = \frac{33}{105} - \frac{5}{105} = \frac{28}{105} = \frac{4}{15} \approx 0.27\]
H) \[0.7 \cdot 2 = 1.4\]
O) \[-0.4 - 0.6 = -1\]
П) \[-0.4 + 0.6 = 0.2\]
P) \[-0.2 + 5 = 4.8\]
C) \[-0.1 - 0.02 = -0.12\]
T) \[-0.1 + 0.02 = -0.08\]
У) \[-1.9 + 2 = 0.1\]
Ф) \[6.4 - 8 = -1.6\]
X) \[-0.5 - 0.7 = -1.2\]
Ц) \[-0.5 + 0.7 = 0.2\]
Ч) \[-1.8 + 1 \frac{4}{5} = -1.8 + 1.8 = 0\]
Ш) \[-1.8 - 1 \frac{4}{5} = -1.8 - 1.8 = -3.6\]
Щ) \[-0.64 + 9.36 = 8.72\]
Ъ) \[-0.64 - 9.36 = -10\]
Ы) \(\frac{3}{20} + 0.15 = \frac{3}{20} + \frac{15}{100} = \frac{15}{100} + \frac{15}{100} = \frac{30}{100} = 0.3\)
Э) \(\frac{3}{20} - 0.15 = \frac{3}{20} - \frac{15}{100} = \frac{15}{100} - \frac{15}{100} = 0\)
Ответ: смотри решение выше