Question 1201368
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To make your formulas readable in this forum, you should use parentheses,
to show which part of the formula is the numerator and which is the denominator.


Next, in order for your writing be meaningful, you must attach your question.


Without your question, attached at the end of the post, you can throw
your writing to the closest garbage bin with the same success.



It will be even better, because then you will not bother the tutors in vain.



It's strange that I have to explain such simple things to people 
who, as it seems, already know how to write.