What is the value of $n$ in the equation $- 15 (2 + n) = - 16 (n - 7)$ .

140

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141

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142

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144

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Solution

The correct option is C $142$
Given, $- 15 (2 + n) = - 16 (n - 7)$
$\Rightarrow - 30 - 15 n = - 16 n + 112$ ...[By Distribution Law].

Transposing $x$ terms to one side, we get,
$\Rightarrow 16 n - 15 n = 112 + 30$
$\Rightarrow n = 142$ .

Hence, option $C$ is correct.

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