Question

bỏ ngoặc rồi tính:

-(12+21-23)-(23-21+10)

lam ơn làm giùm mik mik tik cho!

Answer 1

= 12 - 21 + 23 - 23 + 21 - 10

= ( 12 - 10) + ( 23 - 23 ) + ( 21 - 21)

= 2 + 0 + 0

= 2

Answer 2

-(12+21-23)-(23-21+10)= -12-21+23-23+21-10=-22

Ủng hộ nhaa bn

Answer 3

-(12+21-23)-(23-21+10)

= - 12-21+23-23-21+10

= (-12+10)+(21-21)+(23-23)

= -2+0+0

=-2

Answer 4

-(12+21-23)-(23-21+10)

=-12-21+23-23+21-10

=[(21+21]+(23-23)-(12+10)

=0+0-22

=-22