Question 3(i)
Work out the following divisions
$(10 x - 25) \div 5$

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Solution

$G i v e n, (10 x - 25) \div 5$
$\Rightarrow 10 x - 25 = 5 (2 x - 5)$
$\Rightarrow (10 x - 25) \div 5 = \frac{5 (2 x - 5)}{5} = 2 x - 5$

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Question 6

In the following question, out of the four options, only one is correct. Write the correct answer:

The value of ${(\frac{2}{5})}^{- 2}$ is
(a) $\frac{4}{5}$
(b) $\frac{4}{25}$
(c) $\frac{25}{4}$
(d) $\frac{5}{2}$

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