Question

1)20 7/13 - 11 1/2=2)6 2/15-1 2/4=3)15 11/12-5 5/6=4)11 11/13-12 9/10=​

Answer 1

Ответ:

$1)9 \times \frac{1}{26}$

$2)4 \times \frac{19}{30}$

$3)10 \times \frac{1}{12}$

$4)- 1 \times \frac{7}{130}$

Answer 2

Let's solve each of these subtraction problems step by step:

1. $20 \frac{7}{13} - 11 \frac{1}{2}$:

   To subtract mixed numbers, subtract the whole numbers and then subtract the fractions.

   $20 - 11 = 9$

   $\frac{7}{13} - \frac{1}{2}$:

   To subtract fractions with different denominators, find a common denominator. In this case, the common denominator is 26.

   $\frac{14}{26} - \frac{13}{26} = \frac{1}{26}$

   Putting it together, the result is $9 \frac{1}{26}$.

2. $6 \frac{2}{15} - 1 \frac{2}{4}$:

   $6 - 1 = 5$

   $\frac{2}{15} - \frac{2}{4}$:

   Find a common denominator, which is 60.

   $\frac{8}{60} - \frac{30}{60} = -\frac{22}{60} = -\frac{11}{30}$

   The result is $5 - \frac{11}{30}$.

3. $15 \frac{11}{12} - 5 \frac{5}{6}$:

   $15 - 5 = 10$

   $\frac{11}{12} - \frac{5}{6}$:

   Find a common denominator, which is 12.

   $\frac{11}{12} - \frac{10}{12} = \frac{1}{12}$

   The final result is $10 \frac{1}{12}$.

4. $11 \frac{11}{13} - 12 \frac{9}{10}$:

   $11 - 12 = -1$

   $\frac{11}{13} - \frac{9}{10}$:

   Find a common denominator, which is 130.

   $\frac{110}{130} - \frac{117}{130} = -\frac{7}{130} = -\frac{1}{18}$

   The result is $-1 \frac{1}{18}$.

So, the solutions are:

1. $9 \frac{1}{26}$
2. $5 - \frac{11}{30}$
3. $10 \frac{1}{12}$
4. $-1 \frac{1}{18}$