1.

3. Evaluate the following.\begin{array}{l}{\frac{-3}{7}+\frac{5}{7}+\frac{1}{7}} \\ {\frac{1}{3}+\frac{7}{8}+\frac{-3}{4}} \\ {\frac{-11}{-4}+\frac{7}{-12}+\frac{-5}{14}+\frac{22}{7}}\end{array}

Answer»

thnx

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