Find the value of the following expression when $x = 2, y = - 3, z = 1$
$x + y + 3 z$

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Solution

The expression is $x + y + 3 z$ ,
Putting the values,
$= x + y + 3 z = 2 + (- 3) + (3 \times 1) = 2 - 3 + 3 = 2$
Hence , the value of the expression is $2$ .

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