Add or subtract. Write fraction in simplest form.
$2 - (- 9)$

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Solution

Addition oif integers:
$2 - (- 9)$
Solving brackets
We know $- (-)$ becomes $‘ + ’$
$∴ 2 + 9$
$2 + 9 = 11$
Hence, the value of $2 - (- 9)$ is $11$

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