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)-(43) - 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:

$14 - 10 = 4$

$+ 18 + 12 = 30$

$24 + 14 = 38$

$20 - 10 - 10 = 10 - 10 = 0$

$- 3 + 5 - 4 = 2 - 4 = - 2$

$10 + 43 - 6 + 2 \\ 53 - 4 = 49$

$- 4 - 1 + 15 - 4 - 14 \\ - 5 + 15 - 4 - 14 \\ 10 - 4 - 14 \\ 6 - 14 = - 8$

$- 40 + 7 - 2 - 7( - 1) + 6 \\ - 40 + 7 - 2 + 7 + 6 \\ - 33 - 2 + 7 + 6 \\ - 35 + 7 + 6 \\ - 28 + 6 = - 22$