Question

1/3-1/9 10/21-1/3 14/15-3/5​

Answer 1

Ответ:

1/3-1/9=2/9

10/21-1/3=1/7

14/15-3/5​=1/3

Answer 2

Let's calculate each of these subtractions step by step:

1. $\frac{1}{3} - \frac{1}{9}$

   To subtract fractions, we need to find a common denominator. In this case, the common denominator is 9. So:

   $\frac{1}{3} - \frac{1}{9} = \frac{3}{9} - \frac{1}{9}$

   Now that we have a common denominator, we can subtract the numerators:

   $\frac{3 - 1}{9} = \frac{2}{9}$

2. $\frac{10}{21} - \frac{1}{3}$

   To subtract fractions, we need a common denominator. In this case, the common denominator is 21. So:

   $\frac{10}{21} - \frac{1}{3} = \frac{10}{21} - \frac{7}{21}$

   Now that we have a common denominator, we can subtract the numerators:

   $\frac{10 - 7}{21} = \frac{3}{21}$

   To simplify further, we can divide both the numerator and denominator by their greatest common divisor, which is 3:

   $\frac{3/3}{21/3} = \frac{1}{7}$

3. $\frac{14}{15} - \frac{3}{5}$

   Again, we need a common denominator, which in this case is 15. So:

   $\frac{14}{15} - \frac{3}{5} = \frac{14}{15} - \frac{9}{15}$

   Now that we have a common denominator, we can subtract the numerators:

   $\frac{14 - 9}{15} = \frac{5}{15}$

   To simplify further, we can divide both the numerator and denominator by their greatest common divisor, which is 5:

   $\frac{5/5}{15/5} = \frac{1}{3}$

So, the results of the subtractions are:

1. $\frac{1}{3} - \frac{1}{9} = \frac{2}{9}$
2. $\frac{10}{21} - \frac{1}{3} = \frac{1}{7}$
3. $\frac{14}{15} - \frac{3}{5} = \frac{1}{3}$