Question

36 este divizibil (2x-1)

Answer 1

(2x+1)€D36={1,2,3,4,6,9,12,18,36}|-1
2x=0,1,2,3,5,8,11,17,35}|:2
x={0,1 supra 2,1,3 supra 2,5 supra 2,4,11 supra 2,17 supra 2,35 supra 2}