Question

-75.57 + 75.34 - ( 57.34 - 57.75 )

-11.45 - (-11).25 - ( 29.3+29.17 )

-12.7 -72.(-12) - ( 25.55-25.43 )

Answer 1

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`-75.57 + 75.34 - ( 57.34 - 57.75 )`

`= -75 . 57 + 75.34 - 57.34 + 57.75`

`= 75.( - 57 + 34 + 57) + 75.34`

`= 75.34 + 75.34`

`= (75.34) .2`

`= 2550 . 2`

`= 5100`

_______

\(-11.45 - (-11).25 - ( 29.3+29.17 )\)

`= -11. (45 - 25) - 29(3 + 17)`

`= -11.20 - 29.20`

`= 20. (-11 - 29)`

`= 20. (-40)`

`= -80`

_______

\(-12.7 -72.(-12) - ( 25.55-25.43 )\)

`= -12. (7 - 72) - 25( 55 - 43)`

`= -12.(-65) - 25.12`

`= 12.65 - 25 . 12`

`= 12(65 - 25)`

`= 12.40`

`= 480`