Question

Calcule o valor N,quando:

a)N=2.(+7)+5.(-2)=

b)N=(-6).(-3)+2.(-6)=

c)N=3.(+8)-7.(-7)=

d)N=2.(+10)+5.(-2)-10=

e)N=3.(-1)-5.(-1)+4.(-1)=

f)N=10-(-1)+(-1).(+3)-2.(+3)+2=

g)N=-4+(-1)-(+5).(-3)-4+7.(-2)=

h)N=8.(-5)-(-7).(+2)-3-4.(-1)+6=​

Answer 1

Resposta:

a)N=2.(+7)+5.(-2)=

14+(-10 )= +4

b)N=(-6).(-3)+2.(-6)=

18+(-12)= +6

c)N=3.(+8)-7.(-7)=

24-(-49)= +73

d)N=2.(+10)+5.(-2)-10=

20+(-10)-10= 0

e)N=3.(-1)-5.(-1)+4.(-1)=

-3.5.-4 = +60

f)N=10-(-1)+(-1).(+3)-2.(+3)+2=

10+1-3-6+2= +4

g)N=-4+(-1)-(+5).(-3)-4+7.(-2)=

18-4-14 = 0

h)N=8.(-5)-(-7).(+2)-3-4.(-1)+6=​

-40+21 = -19