Question

Решить 1) 5 7/9+(-8 3/4)+(-3 13/36)+2 7/18 и 2) -5 1/2+2 5/8+5 5/6+(-3 1/8)

Answer 1

$1)5 \frac{7}{9} - 8 \frac{3}{4} = 5 \frac{28}{36} - 8 \frac{27}{36} = \\ 5 \frac{28}{36} - 7 \frac{63}{36} = - 2 \frac{35}{36}$

$- 2 \frac{35}{36} - 3 \frac{13}{36} = - 5 \frac{48}{36} = - 6 \frac{12}{36} = \\ = - 6 \frac{1}{3}$

$- 6 \frac{1}{3} + 2 \frac{7}{18} = - 6 \frac{6}{18} + 2 \frac{7}{18} = \\ - 5 \frac{24}{18} + 2 \frac{7}{18} = - 3 \frac{17}{18}$

$2) - 5 \frac{1}{2} + 2 \frac{5}{8} = - 5 \frac{4}{8} + 2 \frac{5}{8} = \\ - 4 \frac{12}{8} + 2 \frac{5}{8} = - 2 \frac{7}{8}$

$- 2 \frac{7}{8} + 5 \frac{5}{6} = - 2 \frac{21}{24} + 5 \frac{20}{24} = \\ - 2 \frac{21}{24} + 4 \frac{44}{20} = 2 \frac{23}{20} = 3 \frac{3}{20}$

$3 \frac{3}{20} - 3 \frac{1}{8} = 3 \frac{6}{40} - 3 \frac{5}{40} = \frac{1}{40}$