Question

Determinati multimea A={x-4 totul supra 2 mai mic decat x mai mic sau egal cu 5-x}

Answer 1

(x-4)/2<x≤5-x
(x-4)/2<x
x-4<2x
x-2x<4
-x<4    ·-1
x>-4

x≤5-x
x+x≤5
2x≤5
x≤5/2
x≤2,5
x∈(-4;2,5]
A={-3,-2,-1,0,1,2,2,5}