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Addition and Subtraction of Integers

Simplify : 2...

Question

Simplify :
$21 - 27 + 3 + 12 \times (- 1)$

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Solution

$21 - 27 + 3 + 12 \times (- 1)$
$= 21 - 27 + 3 - 12$
$= - 6 + 3 - 12$
$= - 3 - 12$
$= - 15$ .

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