Exemplar exercise problems XIX — task. Mathematics CBSE, Class 8.

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Using suitable rearrangement and find the sum:

(a)

$\frac{4}{7} + \left(\frac{-4}{9}\right) + \frac{3}{7} + \left(\frac{-13}{9}\right)$

Ans:

$\frac{i}{i}$

(b)

$-5 + \frac{7}{10} + \frac{3}{7} + (-3) + \frac{5}{14} + \frac{-4}{5}$

Ans:

$\frac{i}{i}$

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