Question

Arme e efetue: a)3 4 + 5 3 = b) 1 3 4 + 3 2 3 = c) 9 6 − 7 8 = d) 2 8 6 − 2 8 − 3 =

Answer 1

Resposta:

a)87

b)457

c)-75

d)255