Question

Выполните вычитание: а)1-3/4. б)2-5/6. в)9-11/12. г)7-1 7/8. д)5-2 2/5. е)6-5 5/8. ж)8-5 5/8. з)5 7/15-3/20. и)1 5/12-9/10. к)6 3/10-11/15. л)5 7/8-9/10. м)7 5/13-3 2/9. н)10 1/2-4 9/14. о)7 4/7-5 7/9. п)2 3/10-1 11/15. р)5 3/8-3 5/6

Answer 1

А) $1- \frac{3}{4}= \frac{1}{4}$
b) 2-$\frac{5}{6}$=1 $\frac{1}{6}$
в)9-$\frac{11}{12} = 8 \frac{1}{12}$
г)7-$1 \frac{7}{8} = \frac{56}{8} - \frac{17}{8} = \frac{39}{8} = 4 \frac{7}{8}$
д)$\frac{25}{5}- \frac{12}{5} = \frac{13}{5} =2 \frac{3}{5}$
е)$\frac{48}{8} - \frac{45}{8} = \frac{3}{8}$
ж)$\frac{64}{8} - \frac{45}{8} = \frac{19}{8} =2 \frac{3}{8}$
з)$\frac{82}{15} - \frac{3}{20} = \frac{328-9}{60} = \frac{319}{60} = 5 \frac{19}{60}$
и)$\frac{17}{12} - \frac{9}{10} = \frac{85-54}{60} = \frac{31}{60}$
к)$\frac{63}{10} - \frac{11}{15}= \frac{378-44}{60} = \frac{334}{60} =5 \frac{17}{30}$
л)$\frac{55}{8} - \frac{9}{10} = \frac{550-72}{80} = \frac{478}{80} =5 \frac{39}{40}$
м)$\frac{96}{13} - \frac{29}{9} = \frac{864-377}{117} = \frac{487}{117} =4 \frac{19}{117}$
н)$\frac{21}{2} - \frac{65}{14} = \frac{147-65}{14} = \frac{82}{14} =5 \frac{6}{7}$
о)$\frac{53}{7} - \frac{52}{9} = \frac{477-364}{63} = \frac{113}{63} =1 \frac{50}{63}$
п)$\frac{23}{10} - \frac{26}{15} = \frac{138-104}{60} = \frac{17}{30}$
р)$\frac{51}{8} - \frac{5}{6} = \frac{306-40}{48} = \frac{133}{24} = 5 \frac{13}{24}$

Answer 2

a) 1 - 3/4: To subtract fractions, we need to have a common denominator. In this case, the common denominator is 4. So, we can rewrite 1 as 4/4.

1 - 3/4 = 4/4 - 3/4 = (4 - 3)/4 = 1/4

Therefore, the answer is 1/4.

b) 2 - 5/6: Again, we need a common denominator to subtract fractions. The common denominator here is 6. So, we can rewrite 2 as 12/6.

2 - 5/6 = 12/6 - 5/6 = (12 - 5)/6 = 7/6

But 7/6 is an improper fraction. We can simplify it by dividing the numerator by the denominator:

7/6 = 1 and 1/6

So, the answer is 1 1/6.

c) 9 - 11/12: This time, the common denominator is 12. So, we can rewrite 9 as 108/12.

9 - 11/12 = 108/12 - 11/12 = (108 - 11)/12 = 97/12

The answer is 97/12.

d) 7 - 1 + 7/8: To perform the subtraction and addition, we need to follow the order of operations (PEMDAS). First, we subtract 1 from 7, and then we add the result to 7/8.

7 - 1 + 7/8 = 6 + 7/8

To add the whole number and the fraction, we need a common denominator. The common denominator here is 8. So, we can rewrite 6 as 48/8.

6 + 7/8 = 48/8 + 7/8 = (48 + 7)/8 = 55/8

The answer is 55/8.

e) 5 - 2 + 2/5: Following the order of operations, we subtract 2 from 5 and then add the result to 2/5.

5 - 2 + 2/5 = 3 + 2/5

To add the whole number and the fraction, we need a common denominator. The common denominator here is 5. So, we can rewrite 3 as 15/5.

3 + 2/5 = 15/5 + 2/5 = (15 + 2)/5 = 17/5

The answer is 17/5.

f) 6 - 5 + 5/8: Following the order of operations, we subtract 5 from 6 and then add the result to 5/8.

6 - 5 + 5/8 = 1 + 5/8

To add the whole number and the fraction, we need a common denominator. The common denominator here is 8. So, we can rewrite 1 as 8/8.

1 + 5/8 = 8/8 + 5/8 = (8 + 5)/8 = 13/8

The answer is 13/8.

g) 8 - 5 + 5/8: Following the order of operations, we subtract 5 from 8 and then add the result to 5/8.

8 - 5 + 5/8 = 3 + 5/8

To add the whole number and the fraction, we need a common denominator. The common denominator here is 8. So, we can rewrite 3 as 24/8.

3 + 5/8 = 24/8 + 5/8 = (24 + 5)/8 = 29/8

The answer is 29/8.

h) 5 + 7/15 - 3/20: To perform the addition and subtraction, we need to follow the order of operations (PEMDAS). First, we add 5 and 7/15, and then we subtract 3/20 from the result.

5 + 7/15 - 3/20 = (5 * 20/20) + 7/15 - 3/20

To add the whole number and the fraction, we need a common denominator. The common denominator here is 20. So, we can rewrite 5 as 100/20.

(5 * 20/20) + 7/15 - 3/20 = 100/20 + 7/15 - 3/20

Now, we can add the fractions. To do that, we need a common denominator for 15 and 20. The least common multiple of 15 and 20 is 60. So, we can rewrite the fractions with