Question

Quando dá este cálculo? (-1) - (+3): (-5) 2 4 6

Answer 1

a. R={(a,1),(b,3),(c,4),(a,3)} b. R={(1,a),(4,a),(3,b),(c,2)} c. R={(a,1),(b,3),(c,2)} d. R={(a,1),(a,4),(b,3),(c,2)}