Question 1137333
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The "solution" by @josgarithmetic is totally &nbsp;&nbsp;<U>W R O N G</U>.


You can easily see it, &nbsp;if you substitute the given values into the left and right sides of his &nbsp;"solution".


For your safety, &nbsp;ignore his solution and his answer.



Keep yourself as far as you can from his "solutions".


Half of them are wrong.


This person is absolutely unqualified to be a tutor.