Melody

You are turning the wrong fraction upside down :)

3/5n - 4/5 = 1/5n 

I'll show you very formally.

The equation must always balance, like a tetter totter (I think that is what Americans call them)

Whatever you do to one side you must do to the other side as well!

\(\frac{3}{5}n-\frac{4}{5}=\frac{1}{5}n\\~\\ \frac{3}{5}n-\frac{4}{5}-\frac{1}{5}n=\frac{1}{5}n-\frac{1}{5}n\\~\\ \frac{2}{5}n-\frac{4}{5}+\frac{4}{5}=0+\frac{4}{5}\\~\\ \frac{2}{5}n=\frac{4}{5}\\~\\ \frac{2}{5}n\div \frac{2}{5} =\frac{4}{5}\div \frac{2}{5}\\~\\ n=\frac{4}{5}\div \frac{2}{5}\\~\\ n=\frac{4}{5}\times \color{blue}{\frac{5}{2}}\\~\\ n=\frac{2}{1}\\~\\ n=2\)

Thanks Nickolas :)

Mmm I can not see that you put that anywhere.

anyway, if you have to go I will see you later :)

My way does the whole thing all at once Nickolas. You do not need to worry about seperating the triangle an anything like that.

No, the parallel lines are  14 and 18   (the top and the bottom)

the perpendicular height is  7

No the parallel sides are the top and the bottom, They are running the same direction as each other. 

Ok Nicolas, try again,

How long are the parallel lines and what is the perpendicular height?

Then

What is the area?

Yes but perpendicular lines have to intersect at right angles!   That is 90 degrees

Congratulations! it is great that you can  now post pics!

Ok those P words - how confusing!

Parallel and Perpendicular.

Parallel  Lines

                what do you see in the middle    ll   

                  they look like railway tracks to me. 

                  They are both going in the same direction!  

                  Parallel lines are like train tracks just like the ll in the middle of the word shows you !

                  Parallel lines

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Perpendicular lines are the other ones. They are at right angles to each other. 

Perpendicular lines