Question

-5/7.3/13-5/7.10/13+12/7

Answer 1

`= -5/7 xx ((3+10)/13) + 12/7`

`= -5/7 + 12/7`

`= 7/7`

`= 1`

Answer 2

`(-5)/7 . 3/13 - 5/7 . 10/13 + 12/7`

`= 5/7 . (-3)/13 - 5/7 . 10/13 + 12/7`

`=5/7 . (-3/13 - 10/13) + 12/7`

`=5/7 . (-13/13) + 12/7`

`=5/7 . (-1) + 12/7`

`=(-5)/7 + 12/7`

`=7/7`

`=1`

`#H.J`

Answer 3

=-5/7.(3/13+10/13)+12/7

=-5/7.1+12/7

=7/7=1