Question

Todas as alternativas estão corretas. Exceto.
a ) [-1/2]=[+1/2]
b) [1+1/2]=[-3/2]
c)[ 1/2+1/3]=[1/2-1/3]
d) [-3.(-4)+(-10)]=[-2³:(4)]

Answer 1

a) -1/2 = 1/2      OK
b) 1+1/2 = 3/2   OK
c) 1/2 + 1/3 = 1/2 - 1/3 (errada) 5/6 ≠ 1/6
     1/2 + 1/3 = 5/6
d) [-3)-4)+(-10)] = [-2^3:4]
    [12-10] = [8:4]
              2 = 2  OK