Question

Va rog frumos sa ma ajutați ca am nevoie !!! Va roggg!!!!​

Answer 1

Explicație pas cu pas:

x+3|6 => x+3€D6 in Z =>

x+3€{-6,-3,-2,-1,1,2,3,6} =>

x€{-9,-6,-5,-4,-2,-1,0,3}

x€N => x€{0,3}

x-4|-11 => x-4€D(-11) in Z =>

x-4€{-11,-1,1,11} =>

x€{-7,3,5,15}

x+5/x-2€Z <=>

x-2|x+5

x-2|x-2

=> x-2|x+5-x+2 => x-2|7 => x-2€D7 in Z =>

x-2€{-7,-1,1,7} => x€{-5,1,3,9}

x€N => x€{1,3,9}

3x-2/x+1€Z <=>

x+1|3x-2

x+1|x+1=>x+1|3x+3

=> x+1|3x+3-3x+2 => x+1|5 =>x+1€D5 in Z =>x+1€{-5,-1,1,5} =>

x€{-6,-2,0,4}