Question

( 55 + 45 + 15 ) - ( 15 - 55 + 45 )

Answer 1

(55+45+15) - (15-55+45) = (100+15) - (-40+45)

                                    = 115 - 5

                                   =110

Answer 2

\(\left(55+45+15\right)-\left(15-55+45\right)\)

\(=55+45+15-15+55-45\)

\(=55+55\)

\(=110\)

Answer 3

bằng 110

Answer 4

(

55

+

45

+

15

)

−

(

15

−

55

+

45

)

 

=

55

+

45

+

15

−

15

+

55

−

45

 

=

55

+

55

 

= 110

 

Answer 5

(55+45+15)-(15-55+45)

=115-5

=110