Question

Rezolvați sistemul :{x≤y+2
{x+2y≥5

Answer 1

Răspuns

x-y≤2 ×(-1)

x+2y≥5

-x+y≥-2

x+2y≥5

3y≥3

y≥1

y∈[1, +∞)

x-1≤2

x≤3

x∈(-∞,3]

x+2y≥