Question

решить неравенство z-4/2-3≥ 2-z/4+1

Answer 1

z- 4/2-3≥ 2- z/4 +1
z-2-3-2+ z/4 -1≥0
z-8+ z/4≥0
(4z-32+z)/4≥0
5z-32≥0
5z≥32 |:5
z≥6,4
z∈[6,4; +∞)