Question

rezolvati inecuatiile in multimea numerelor naturale. 6+x<21, 7-x>1,23, 9+x<17, 18-x>15,5

Answer 1

a) x<21,7-6
    x<15,7
    x={1,2,3,4,.......,15}

b) x>7-1,23
    x>5,77
    x={6,7,8,9......}
     
c) x<17-9
    x<8
    x={1,2,3,4,5,6,7}

d) x>18-15,5
     x>2,5
     x={3,4,5,6........}