Question

1) -1/4 - 5/7

2) - 5/6 - 1/3

3) - 3/7 -4/7

ВТОРОЙ СТОЛБИК

1) -4 3/8 - 2 1/4

2) - 6 1/2 - 3 5/7

3) - 1/8 - 3/4

Answer 1

ответы:

1) $-\frac{27}{28}$

2)$-1\frac{1}{6}$

3)-1

4) $-6\frac{5}{8}$

5) $-10\frac{3}{14}$

6) $-\frac{7}{8}$

$-\frac{1}{4} -\frac{5}{7} =\frac{-7-20}{28} =\frac{-27}{28}=-\frac{27}{28}$

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

$-\frac{3}{7}-\frac{4}{7}=-\frac{-3-4}{7} =\frac{-7}{7} =-\frac{7}{7}$=-1

$-4\frac{3}{8} -2\frac{1}{4} =-(4\frac{3}{8} +2\frac{1}{4})=-((4+2)+(\frac{3}{8}+\frac{1}{4}  ))=-(6+\frac{5}{8} )=-6\frac{5}{8}$

$-6\frac{1}{2}-3\frac{5}{7} =-(6\frac{1}{2}+3\frac{5}{7} )=-((6+3)+(\frac{1}{2}+\frac{5}{7} ))=-(9+\frac{17}{14} )=-(9+1\frac{3}{14} )=-(9+1+\frac{3}{14} )=-(10+\frac{3}{14} )=-10\frac{3}{14}$

$-\frac{1}{8} -\frac{3}{4} =-\frac{1+6}{8} =-\frac{7}{8}$