Question

Answer 1

`a)`

`7/19 xx 1/3 + 7/19 xx 2/3`

`= 7/19 xx ( 1/3 + 2/3)`

`= 7/19 xx 3/3`

`= 7/19 xx 1=7/19`

`b)`

`2/5 + 3/4+ 1/4`

`= 2/5+( 3/4+ 1/4)`

`= 2/5+1`

`= 2/5 + 5/5`

`= 7/5`

Answer 2

`7/19 xx 1/3+7/19 xx 2/3`

`=7/19 xx (1/3+2/3)`

`=7/19 xx 3/3`

`=7/19 xx 1`

`=7/19`

___________________________________

`2/5+3/4+1/4`

`=2/5+(3/4+1/4)`

`=2/5+4/4`

`=2/5+1`

`=7/5`

Answer 3

`7/19 xx 1/3 + 7/19 xx 2/3`

`= 7/19 xx ( 1/3 + 2/3 )`

`= 7/19 xx 1 = 7/19`

`2/5 + 3/4 + 1/4`

`= 2/5 + ( 3/4 + 1/4)`

`= 2/5 + 1`

`= 2/5 + 5/5`

`= 7/5`