To solve the problem, we need to identify the initial number of stickers Reann had. Let's break down the situation step by step:
- Let \( x \) be the number of stickers Reann started with.
- She gives half of them to her friend, so she has \( \frac{x}{2} \) left.
- Her brother then gives her 8 stickers, so she now has \( \frac{x}{2} + 8 \).
- We're told that she ends up with 12 stickers, which gives us the equation:
\[ \frac{x}{2} + 8 = 12 \]
To solve this equation, we will perform subtraction and multiplication:
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Subtract 8 from both sides: \[ \frac{x}{2} = 4 \]
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Then, multiply both sides by 2 to find \( x \): \[ x = 8 \]
Thus, the operations needed to solve this problem are subtraction and multiplication.
The correct response would be:
subtraction and multiplication