Adding and Subtracting Like Fractions

What is the greatest common factor (GCF) of 24 and 36?

• 4

• 6

• 8

• 12

 $\frac{-4}{7}\ -\ \frac{2}{7}\ =\$  

•  $\frac{6}{7}$  

•  $\frac{-6}{7}\ =\ \frac{6}{-7}$  
  

•  $\frac{2}{7}$  

•  $\frac{-2}{7}\ =\ \frac{2}{-7}$  

 $\frac{-1}{6}\ +\ \frac{5}{6}\ =\$  ?
(Hint: Don't forget to simplify)

•  $\frac{2}{3}$  

•  $\frac{4}{6}$  

•  $\frac{6}{6}$  

•  $\frac{-4}{6}\ =\ \frac{4}{-6}$  
  

 $\frac{2}{15}-\frac{7}{15}\ =\$  

(Hint: Don't forget to simplify)

•  $\frac{5}{15}$  

•  $\frac{-5}{15}\ =\ \frac{5}{-15}$  

•  $\frac{-1}{3}\ =\ \frac{1}{-3}$  

•  $\frac{1}{3}$  

 $\frac{-2}{7}\ +\ \frac{5}{7}\ =$  

•  $\frac{7}{7}$  

•  $\frac{3}{7}$  

•  $\frac{-3}{7}\ =\ \frac{3}{-7}$  

• 1

 $\frac{-15}{58}-\frac{14}{58}\ =$  

(Hint: Don't forget to simplify)

•  $\frac{-29}{18}\ =\ \frac{29}{-18}$  

•  $\frac{1}{2}$  

•  $\frac{-29}{58\ }=\ \frac{29}{-58}$  

•  $\frac{-1}{2}\ =\ \frac{1}{-2}$  

 $\frac{3}{8}\ -\frac{5}{8}\ =$  
(Hint: Don't forget to simplify)

•  $\frac{-1}{4}\ =\ \frac{1}{-4}$  

•  $\frac{1}{4}$  

•  $\frac{8}{8}\ =\ 1$  

•  $\frac{-2}{8}\ =\ \frac{2}{-8}$  

 $\frac{12}{30}\ +\ \frac{8}{30}\ =$  
(Hint: Don't forget to simplify)

•  $\frac{20}{30}$  

•  $\frac{4}{30}$  

•  $\frac{2}{3}$  

•  $\frac{10}{15}$  

 $\frac{-13}{30}\ +\ \frac{17}{30\ }=\$  
(Hint: Don't forget to simplify)

•  $\frac{30}{30\ }=\ 1$  

•  $\frac{2}{15}$  

•  $\frac{-30}{30\ }=\ -1$  

•  $\frac{4}{30}$  

 $\frac{11}{12}-\frac{7}{12}\ =\$  
(Hint: Don't forget to simplify)

•  $\frac{1}{3}$  

•  $\frac{18}{12}$  

•  $\frac{4}{12}$  

•  $\frac{5}{12}$