Question

2. Calcule o valor de 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

E PRA HOJEE SOCORROOO​

Answer 1

Resposta:

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

14+10=24

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= -2

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

10+1-1.(+3)-2.(+3)+2

10+1-3-6+2

11-3-6+2=4

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

-4-1(-15) -4+7.(-2)

-4-1+15-4-14

-5+15-4-14= -8

h)_N= 8.(-5) -(-7).(+2) -3-4.(-1)+6

-40-(-14) -3+4+6

-40+14_3+4+6

-26-3+4+6

-29+4+6= -19