Question

Calculati, va rog ajutati-ma
a) (+3) + (+5) =
(+21) + (+10) =
(+25)+ (+25) =
(+15)+(+16) =

b) (+8) + (-5) =
(+6)+(-6) =
-21+(+29) =
-18-26 =

Answer 1

a) (+3)+(+5)=+8
(+21) +(+10)=+31
(+25)+(+25)=+50
(+15)+(+16)=+31
b) (+8)+(-5)=+4
(+6)+(-6)=0
-21+(+29)=+8
-18-26= -44

Answer 2

a) (+3)+(+5)=3+5=8
(+21)+(+10)=21+10=31
(+25)+(+25)=25+25=50
(+15)+(+16)=15+16=31
b) (+8)+(-5)=8-5=3
(+6)+(-6)=6-6=0
-21+(+29)=-21+29=8
-18-26=-44