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  • Solve (a) 2/3 + 1/ 7 Exercise 7.6 Que. 1

1.   Solve

             (a)   \frac{2}{3}+\frac{1}{7}                 (b)  \frac{3}{10}+\frac{7}{15}                (c)   \frac{4}{9}+\frac{2}{7}

             (d)  \frac{5}{7}+\frac{1}{3}                  (e)   \frac{2}{5}+\frac{1}{6}                      (f)   \frac{4}{5}+\frac{2}{3}

            

               

Answers (1)

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    (a)     \frac{2}{3}+\frac{1}{7}\ =\ \frac{2\times 7\ +\ 1\times 3}{21}\ =\ \frac{17}{21}

    (b)    \frac{3}{10}+\frac{7}{15}\ =\ \frac{3\times 15\ +\ 7\times 10}{150}\ =\ \frac{115}{150}\ =\ \frac{23}{30}

     (c)   \frac{4}{9}+\frac{2}{7}\ =\ \frac{4\times 3\ +\ 2\times 9}{63}\ =\ \frac{46}{63}

 (d)    \frac{5}{7}+\frac{1}{3}\ =\ \frac{5\times 3\ +\ 1\times 7}{21}\ =\ \frac{22}{21}

(e)     \frac{2}{5}+\frac{1}{6}\ =\ \frac{2\times 6\ +\ 1\times 5}{30}\ =\ \frac{17}{30}

(f)     \frac{4}{5}+\frac{2}{3}\ =\ \frac{4\times 3\ +\ 2\times 5}{15}\ =\ \frac{22}{15}

 

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Devendra Khairwa

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