Simplify:
(ii) $10 m + (4 n - 3 n) - 5 n$

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Solution

$10 m + (4 n - 3 n) - 5 n = 10 m + n - 5 n$

[On removing the small brackets]

$= 10 m - 4 n$

Hence, the value of $10 m + (4 n - 3 n) - 5 n = 10 m - 4 n$ .

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