Question

simplify 2/5 plus 3/7 plus -6/5 plus-13/7​

Answer 1

$\frac{2}{5} + \frac{3}{7} - \frac{6}{5} - \frac{13}{7} \\ = \frac{14 + 15 - 42 - 65}{35} \\ = \frac{ - 78}{35}$

Answer 2

2/5 + 3/7 =

LCM OF 7 AND 5 = 35

2/5 = 2 X 7 = 14

5 X 7 = 35

3/7 =

3/7 = 3 X 5 = 15

7 X 5 = 35

14/35 + 15/35 = 29/35

second =

-6/5 + -13/17

LCM of 5 and 7 is equal to 35

-6/5 = -6/5= -6X 7= -42

5X 7= 35

-13/7 = -13X5= -65

7X5= 35

-42/35+-65/35 = 107/35

29/35+107/35= 136/35