The Lowest Common Denominator is $90$.

$\frac{151}{90}=1\frac{61}{90}$

The Lowest Common Denominator is $22$.

The Lowest Common Denominator is $15$.

$\frac{2}{5}\cdot \frac{3}{3}=\frac{6}{15}$

$\frac{6}{15}-\frac{1}{15}=\frac{5}{15}$

$\frac{5}{15}=\frac{1}{3}$