Question

1. Вычислите: 1
4) 5 =
(-8 — :
7) 2
- (-4
3
6
1) 1 — + (-
4
2
2) 5 + (-2);
3
3
3) 4 — + (-
-)
--
(1)
5)
4-7 ):
(-7 — :
8) 1 -
12
в) з (-9).
3
6) 3 — + (-9 —);
(-5
5
9
9) 3
2
+ (-9
погите кто подпешусь​

Answer 1

Переводим смешанные дроби в неправильные и приведём к НОЗ:

1) $1\frac{3}{4} - \frac{1}{2} = \frac{7}{4} - \frac{1}{2} = \frac{7}{4} - \frac{2}{4} = \frac{5}{4}$

2) $5\frac{2}{9} - \frac{1}{3} = \frac{47}{9} - \frac{1}{3} = \frac{47}{9} - \frac{3}{9} = \frac{44}{9} = 4\frac{8}{9}$

3) $4\frac{3}{8} - \frac{1}{4} = \frac{35}{8} - \frac{1}{4} = \frac{35}{8} - \frac{2}{8} = \frac{33}{8} = 4\frac{1}{8}$

4) $5\frac{1}{2} - 8\frac{5}{6} = \frac{11}{2} - \frac{53}{6} = \frac{33}{6} - \frac{53}{6} = -\frac{20}{6} = -3\frac{2}{6}$

5) $4\frac{1}{3} - 7\frac{5}{9} = \frac{13}{3} - \frac{68}{9} = \frac{39}{9} - \frac{68}{9} = -\frac{29}{9} = -3\frac{2}{9}$

6) $3\frac{3}{8} - 9\frac{1}{2} = \frac{27}{8} - \frac{19}{2} = \frac{27}{8} - \frac{76}{8} = -\frac{49}{8} = -6\frac{1}{8}$

7) $2\frac{1}{3} - 4\frac{5}{6} = \frac{7}{3} - \frac{29}{6} = \frac{14}{6} - \frac{29}{6} = -\frac{15}{6} = -2\frac{3}{6}$

8) $1\frac{1}{12} - 5\frac{1}{6} = \frac{13}{12} - \frac{31}{6} = \frac{13}{12} - \frac{62}{12} = -\frac{49}{12} = -4\frac{1}{12}$

9) $3\frac{2}{15} - 9\frac{1}{3} = \frac{47}{15} - \frac{28}{3} = \frac{47}{15} - \frac{140}{15} = -\frac{93}{15} = -6\frac{3}{15}$