[3·( x+19)]:3≥31 urgenttttttttttttttttttttttttttttttttttt













Răspuns :

Gata,am terminat!!!!!!!!!!
Vezi imaginea BI28032016
[3·( x+19)]:3≥31
x+19
≥31
x≥12
x∈[12,+∞)
Sper că te-am ajutat!!!
Succes!!!