### Home > CCA > Chapter 3 > Lesson 3.1.1 > Problem3-11

3-11.

Simplify each expression.

1.  $-\frac{1}{2}+\left(-\frac{1}{5}\right)$

• Use a Giant 1 to change each fraction so that they both have the same denominator.

Add them together as you would any fraction. Both fractions are negative so make sure your answer is, too.

$-\frac{7}{10}$

1.  $-\frac{2}{3}-2$

• Multiply the $2$ by a Giant 1 so that it has the same denominator as the other term.

$-\frac{8}{3}$

1.  $−1\frac{2}{3}(−2)$

• Change both numbers into fractions greater than one, then multiply.

$\frac{10}{3}=3\frac{1}{3}$

1.  $−2\div\frac{2}{3}$

• See the help for part (c). Remember, dividing by a fraction is the same as multiplying by its reciprocal.