Question

x/4-x/5≥6 mayor valor de x
ploqs <3

Answer 1

${\dfrac{x}{4}-\dfrac{x}{5}\geq 6 \ \ (\times 20)}\\\\{5x-4x\geq 120}\\\\{x\geq 120}\\\\\\{\forall x\in[120,+\infty )} \\\\\\{\text{salu2.}}$