Question

Efectuaţi:

a) (+ 7) + (+ 2) + (– 5) + (+ 8) + (– 7) + (– 6) + (+ 9) + (–5)  = 

        b) (+ 2) -  (– 5) - (+ 8) + (– 3) + (– 9) + (+ 8) + (– 1) + (– 3) =​

Answer 1

Răspuns:

a)(+7)+(+2)+(-5)+(+8)+(-7)+(-6)+(+9)+(-5)=

=+7+2-5+8-7-6+9-5

=+9+3-13+4

=+12-9

=+3

b)(+2)-(-5)-(+8)+(-3)+(-9)+(+8)+(-1)+(-3)=

=+2+5-8-3-9+8-1-3

=+7-11-1-4

=-4-5

=-9

Sper sa te ajute!❤

Answer 2

salut! ai rezolvarea in imaginea de mai jos.