ГДЗ Математика 6 клас Істер — Вправа 1035

1) $-1\frac{7}{8} + \left(-7\frac{5}{9}\right) = -\left(1\frac{63}{72} + 7\frac{40}{72}\right) = -8\frac{103}{72} = -9\frac{31}{72};$

2) $-4\frac{11}{12} + \left(-8\frac{9}{16}\right) = -\left(4\frac{44}{48} + 8\frac{27}{48}\right) = -12\frac{71}{48} = -13\frac{23}{48};$

3) $-1\frac{3}{14} + \left(-2\frac{4}{63}\right) = -\left(1\frac{27}{126} + 2\frac{8}{126}\right) = -3\frac{35}{126} = -3\frac{5}{18};$

4) $-2\frac{1}{2} + (-0,65) = -2,5 + (-0,65) = -3,15;$

5) $-3\frac{1}{7} + (-2,8) = -3\frac{1}{7} + (-2\frac{4}{5}) = -\left(3\frac{5}{35} + 2\frac{28}{35}\right) = -5\frac{33}{35};$

6) $-3\frac{2}{3} + (-0,6) = -3\frac{2}{3} + \left(-\frac{3}{5}\right) = -\left(3\frac{10}{15} + \frac{9}{15}\right) = -3\frac{19}{15} = -4\frac{4}{15}.$