Question

calculați;(+12)+(+5)=?,(+63)+(+29)=?,(-32)+(-23)=?,(=15)+(-12)=?,(-92)+(+32)=?,(+21)+(-22)=?

Answer 1

Răspuns:

+12+(+5)=+17;  +63+(+29)=+92;  -32+(-23)=-55;  -15+(-12)=-27;  -92+(+32)= -60   +21+(-22)= -1

Explicație pas cu pas:

regula semnelor nr intregi

Answer 2

a)(+12)+(+5)=(+17)

b)(+63)+(+29)=(+92)

c)(-32)+(-23)=(-55)

d)(+15)+(-12)=(+3)

e)(-92)+(+32)=(-60)

f)(+21)+(-22)=(-1)