Question

(3/7 + 4/21- 7/14 + -3/7)​

Answer 1

$\frac{3}{7} + \frac{4}{21} - \frac{7}{14} + \frac{ - 3}{7} \\ = \frac{3}{7} - \frac{3}{7} + \frac{4}{21} - \frac{7}{14} \\ = 0 + \frac{4}{21} - \frac{7}{14} \\ = \frac{2(4) - 3(7)}{42} \\ = \frac{8 - 21}{42} \\ = \frac{ - 13}{42}$

Answer 2

Step-by-step explanation:

7

3

+

21

4

−

14

7

+

7

−3

=

7

3

−

7

3

+

21

4

−

14

7

=0+

21

4

−

14

7

=

42

2(4)−3(7)

=

42

8−21

=

42

−13