Question

giúp con với ạ

tính nhanh: 89-25+35-56+76-79

Answer 1

40

 

Answer 2

=40

Answer 3

40

Answer 4

what? con?

Answer 5

40

Answer 6

=( 89-79)+ (35-25)+ (76-56)
=10+10+20
=40

Answer 7

40

Answer 8

= 40

Answer 9

40 nhé

Answer 10

Answer 11

=(89-79)+(76-56)+(35-25)

=10+20+10

=30+10

=40

Answer 12

40

Answer 13

40