BALTIC-WAY 1991 Problem 5

For any positive numbers $a, b, c$ prove the inequalities

$$\frac{1}{a}+\frac{1}{b}+\frac{1}{c} \geq \frac{2}{a+b}+\frac{2}{b+c}+\frac{2}{c+a} \geq \frac{9}{a+b+c} .$$