Question

2/3+7/15- -1/21+-3/7​

Answer 1

Answer:

2/3 + 7/15 + 1/21 -3/7

= 17/15 - 8/21

=79/105

Answer 2

Answer:

169/105

Step-by-step explanation:

$\frac{2}{3} + \frac{7}{15 } - \frac{ - 1}{21} + \frac{ - 3}{7}$

$= \frac{10 + 7}{15} - \frac{ - 1 - 9}{21}$

$= \frac{17}{21} + \frac{10}{21}$

$\frac{119 + 50}{105}$

=169/105