## Intermediate Algebra for College Students (7th Edition)

$-\dfrac{3}{10}$
Make the fractions similar using their LCD, which is 10, to obtain: $=\dfrac{1}{10} - \dfrac{4}{10}$ RECALL: $a-b = a+(-b)$ Thus, $\frac{1}{10} - \frac{4}{10} \\= \frac{1}{10} + \frac{-4}{10} \\=-(\frac{4}{10}-\frac{1}{10}) \\=-\frac{3}{10}$