Question

обчисліть 1 ) 3/10 + 4/10 ; 2 ) 6/23 + 14/23 ; 3 ) 26/81 + 17/81 ; 4) 46/90 + 25/90

Answer 1

Ответ:

1. $\displaystyle\frac{3}{10} +\frac{4}{10}= \frac{7}{10}$

2. $\displaystyle\frac{6}{23} +\frac{14}{23} = \frac{20}{23}$

3. $\displaystyle\frac{26}{81} +\frac{17}{81} = \frac{43}{81}$

4. $\displaystyle\frac{46}{90} + \frac{25}{90} = \frac{71}{90}$