Question

Решите пожалуйста! Срочно нужно!!!!!

Answer 1

1.

1) $3frac{7}{8} + 4 frac{5}{12} =3+4 +frac{7}{8} +frac{5}{12} = 7+frac{21+10}{24} =7frac{31}{24} = 8 frac{7}{24}$

2) $4frac{3}{14} + 3frac{2}{21} =4+3 +frac{3}{14} +frac{2}{21} = 7 +frac{9+4}{42} = 7frac{13}{42}$

3) $2-frac{14}{17} = frac{34-14}{17} =frac{20}{17} = 1frac{3}{17}$

4) $4frac{8}{15}-2frac{1}{30} = 4-2 +frac{16-1}{30} = 2 frac{15}{30} = 2 frac{1}{2}$

5) $8frac{1}{10}-3frac{1}{6} = 8-3 + frac{3-5}{30} = 4 frac{28}{30} = 4frac{14}{15}$

6) $11 - 7frac{4}{7} =frac{77}{7} -frac{53}{7} = frac{24}{7}= 3 frac{3}{7}$

2.

a)$x+4frac{3}{5}=7$$x=7-4frac{3}{4} =frac{28}{4}frac{19}{4} =frac{9}{4} =2frac{1}{4}$$x=2frac{1}{4}$

b)$7frac{3}{11} -y=3frac{1}{4}$$y= 7frac{3}{11} =3frac{1}{4} = 7-3 +frac{3}{11} -frac{1}{4} =frac{12-11}{44} =4 frac{1}{44}$

Answer 2

блин

Answer 3

Пробелы не убрал

Answer 4

.-.

Answer 5

8 7/24;
7 13/42
1 3/17
2 1/2
4 14/15
3 3/7
Номер 2
Х+ 4 3/4=7
Х=7-4 3/4
Х=(6+4/4)-(4+3/4)
Х=(6-4)+(4/4-3/4)
Х=2 1/4

7 3/11-у=3 1/4
У=7 3/11- 3 1/4
У=(7-3)+(3/11-1/4)
У=4+12/44-11/44
У= 4 1/44