Question

a)-12./23/+32/-32

b)85.(35-27)-35.(85-27)

Answer 1

a, theo đề ra ta có:

= -12/23 + (-1 )

= -35/23

Answer 2

b, theo đề ra ta có:

= 85.8 - 35.58

= 680 - 2030

= - 1350

Answer 3

/là dấu j

Answer 4

a,-12/23+32/-32

=-12./23/+-1

=-35/23

b,85.(35-27)-35.(85-27)

=85.8-35.58

=680-2030

=-1350