Question

sabendo que m = -5 , n = -7 e p = -12 , calcule :
a) m + n - p
b) p - n + n
c) mn - p
d) n + mp

Answer 1

a) - 5 - 7 + 12 = 0
b) - 12 + 7 - 7 = -12
c) - 5 * ( - 7) + 12 = +35 + 12 = + 47
d) - 7 + ( -5)* ( - 12) = - 7 + 60 = 53

Answer 2

m = -5 , n = -7 e p = -12

a) m + n - p = - 5 - 7 -(-12) = - 12 + 12 = 0

b) p - n + n  = p ==> - 12 

c) mn - p = (- 5)(- 7) -(-12) = + 35+12 = 47

d) n + mp = - 7 + (-5)(-12) = - 7 + 60 = 53