Question

13-{14-15+[(16-17)+2-5]-(-5+7)}=

-9+{5-9-[13-(4-8)+(7+3-12)]-(-9)}=

Answer 1

Răspuns:

13-{14-15+[(16-17)+2-5]-(-5+7)}=10

-9+{5-9-[13-(4-8)+(7+3-12)]-(-9)}=-19

Answer 2

Răspuns:

13-{14-15+[(16-17)+2-5]-(-5+7)}=

13-{14-15+[(-1)+2-5]-2}=

13-[14-15+(-4)-2]=

13-(-1-6)=

13-(-7)=

13+7=

20

-9+{5-9-[13-(4-8)+(7+3-12)]-(-9)}=

-9+{5-9-[13-(-4)+(-2)]-(-9)}=

-9+[-4-(13+4-2)+9]=

-9+(-4-15+9)=

-9+(-10)=

-19

Explicație pas cu pas: