If $a = 2, b = 3$ and $c = 4,$ find the value of
$3 a - b + c$

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Solution

Substituting , $a = 2, b = 3, c = 4,$ we get ,
$3 a - b + c = 3 \times 2 - 3 + 4 = 6 - 3 + 4 = 3 + 4 = 7 .$
Hence , the value of the given expression is $7 .$

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