Question 1122994
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Substitute and calculate.


It is not a question to go to the forum and disturb the tutors for such a miserable reason.


<H3>You must do it on your own !</H3>


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It is a students' honor duty and a privilege to do calculations on their own to develop their minds and skills.


We, the tutors, just developed our minds and skills, and we don't need such practice.


You need it !