Question

решите плиз 2/7+1/3-1/4

Answer 1

2/7+1/3-1/4=13/21-1/4=31/84

Answer 2

$\frac{2}{7} + \frac{1}{3} - \frac{1}{4} = \frac{31}{84}$

1) $\frac{2}{7} + \frac{1}{3} = \frac{6}{21} + \frac{7}{21} = \frac{13}{21}$

НОЗ: 21.

2) $\frac{13}{21} - \frac{1}{4} = \frac{52}{84} - \frac{21}{84} = \frac{31}{84}$

НОЗ: 84.