Răspuns:
a) (16x) : 4 < 64 b) (3x + 7x) : 2 > 15 c) x + 11 > 23
4x < 64 10x : 2 > 5 x > 23-11
x < 16 5x > 5 x > 12
x>1
d) 7(2x - 1) < 63 e) 15 > x + 5
14x - 7 < 63 15 - 5 > x
14x < 70 10 > x
x < 5
