If $x = 1, y = 2 a n d z = 5,$ find the value of $3 x - 2 y + 4 z$

19

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20

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12

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16

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Solution

The correct option is A $19$
We have,
$3 x - 2 y + 4 z$

Since,
$x = 1, y = 2, z = 5$

Therefore,
$\Rightarrow 3 (1) - 2 (2) + 4 (5)$

$\Rightarrow 3 - 4 + 20$

$\Rightarrow - 1 + 20$

$\Rightarrow 19$

Hence, this is the answer.

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