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When \( x = 21 \), \( \frac{x}{7} = 3 \).
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Mind Expander
When you substitute \( x = 21 \) into the expression \( \frac{x}{7} \), you get \( \frac{21}{7} \) which simplifies to 3. So, the result of your expression is 3! It's like dividing a pizza into 7 slices and enjoying 21 slices — you'll end up having 3 whole pizzas! To double-check your result, you can reverse the operation: multiply 3 by 7. If you get back to 21, you’re spot on! This kind of checking helps reinforce your calculations and ensures you’re on the right track!
