Question

responde:

a) ( -11 ) + ( + 39 ) + ( +41 ) - ( +10 ) =

b) ( -12 ) + ( -23 ) - ( +12 ) - ( +22 ) =

c) ( -21 ) - ( -39 ) + ( +21 ) + ( +24 ) = ​

Answer 1

a) ( -11 ) + ( + 39 ) + ( +41 ) - ( +10 ) =

-11 + 39 + 41 - 10 =
= 80 - 21 =
= 59.

b) ( -12 ) + ( -23 ) - ( +12 ) - ( +22 ) =

-12 - 23 - 12 - 22 =
= -24 - 45
= -69.

c) ( -21 ) - ( -39 ) + ( +21 ) + ( +24 ) = ​

-21 + 39 + 21 + 24 =
= 84 - 21 =
= 63.

Answer 2

a) 28 +(+41) -(+10)=

69 - (+10)=

= 59

b)(-12) +(-23) -(+12) -(+22)=

-35-(+12) -(+22)=

-47-(+22)=

= -69

c) (-21)-(-39)+(+21)+(+24)=

18+(+21)+(+24)=

39+(+24)=

=63