Question

Answer 1

`7/(-25) + (-18)/25 + 4/23 + 5/8 + 19/23`

`=-7/25 - 18/25 + 4/23 + 5/8 + 19/23`

`=(-7/25 - 18/25) + (4/23 + 19/23) + 5/8`

`=-25/25 + 23/23 + 5/8`

`=-1+1+5/8`

`=0+5/8`

`=5/8`

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`(-2)/17 + 15/19 + (-15)/17 + 13/20 +4/19`

`= (-2)/17 + 15/19 - 15/17 + 13/20 + 4/19`

`=(-2/17 - 15/17) + (15/19 + 4/19) + 13/20`

`=-17/17 + 19/19 + 13/20`

`=-1+1+13/20`

`=0+13/20`

`=13/20`

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`(-5)/11 + (-6/11 + 1)`

`= (-5)/11 + (-6)/11 + 1`

`=(-5)/11 - 6/11 + 1`

`= (-5-6)/11 + 1`

`=(-11)/11 +1`

`=(-1)+1`

`=0`