Math worksheet for practicing addition and subtraction of fractions with unlike denominators.

Final Answer:
1. $\frac{26}{15}$
2. $\frac{3}{10}$
3. $\frac{53}{63}$
4. $\frac{2}{8}$ or $\frac{1}{4}$
5. $\frac{6}{9}$ or $\frac{2}{3}$
6. $\frac{5}{10}$ or $\frac{1}{2}$
7. $\frac{17}{10}$
8. $\frac{2}{6}$ or $\frac{1}{3}$
9. $\frac{9}{12}$ or $\frac{3}{4}$
10. $\frac{3}{12}$ or $\frac{1}{4}$
11. $\frac{42}{72}$ or $\frac{7}{12}$
12. $\frac{1}{8}$
13. $\frac{50}{42}$ or $\frac{25}{21}$
14. $\frac{4}{21}$
15. $\frac{67}{40}$

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