Question

45-5.(12+9)

Answer 1

45 - 5 . ( 12 + 9 )

= 45 - ( 5 . 9 ) + ( 5 . 12 )

= 45 - 45 + 60

= 0 + 60

= 60

Answer 2

45 - 5.(12+9)

= 45 - 5 . 21

= 45 - 105

= -60

Answer 3

`45 - 5. (12 + 9)`

`= 45 - 5. 21`

`= 45 - 105`

`= -60`