Question 74

The value of '?' in $$3 - \frac{4}{5} + (?) - \frac{7}{15} = 2\frac{2}{5}$$ is

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In fifteenths, $$3 - \frac{4}{5} - \frac{7}{15} = \frac{45 - 12 - 7}{15} = \frac{26}{15}$$ and $$2\frac{2}{5} = \frac{36}{15}$$. So the missing value is $$\frac{36}{15} - \frac{26}{15} = \frac{10}{15} = \frac{2}{3}$$.

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