Adeline is x years old
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<h3>hello!</h3>
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First of all, let the number be u.
The product of 7 and u means you should multiply 7 times u:
Now, subtract 4:
This expression equals 17:
[Now, let's Find the Value of u]
First, add 4 to both sides:
Now, divide both sides by 7:
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<h3>notes:-</h3>Hope everything is clear; if you need any clarification /explanation, kindly let me know, and I will comment and/or edit my answer :)