Question

решите неравенство -(4-х)<= 2(3+х)

Answer 1

-(4-x) ≤ 2(3+x)

-4+x ≤ 6+2x

x-2x ≤ 6+4

-x ≤ 10

x ≥ -10

x є [-10; +∞)

Ответ: [-10; +∞)