Question

31/23-(7/32+8/23)

Answer 1

31/23-(7/32+8/23) =31/23-417/736=25/32

Answer 2

31/23-(7/32+8/23)

=31/23-7/32-8/23

=(31/23-8/23)-7/32

=23/23-7/32

=1-7/32=32/32-7/32=25/32

Answer 3

31 / 23 - ( 7 / 23 + 8 / 23 ) = 31 / 23 - 7 / 23 - 8 / 23 

                                            = ( 31 / 23 + ( -8 ) / 23 ) + ( - 7 ) / 23

                                            =   23 / 23 + ( -7 ) / 23

                                            =  16 / 23

Answer 4

31/21-(7/32+8/23)=31/23-417/736=25/32

Answer 5

Xin lỗi nhé , mình chép sai đề bài

31/ 23 - ( 7/32 + 8/ 23 )

= 31/23 - 7 / 32 - 8/ 23

= 31/ 23 + ( -8 ) / 23 + ( - 7 ) / 32

=  1 + ( - 7 ) / 32

= 32 / 32 + ( - 7 ) / 32

=25 / 32