Question

inequacao u=z
2x+5≥−3x+40

Answer 1

2x+5≥−3x+40
2x + 3x ≥ 40 - 5
5x ≥ 35
x ≥ 35/5
x ≥ 7

Answer 2

2x +5≥-3x +40⇒2x +3x≥40-5⇒5x≥35 ⇒ x≥35/5 ⇒ x≥7
S ={x∈R/ x≥7} ou S =[7,+∞[