Melody

I ask a silly question and what do i get ?  A silly answer of course.    lol  

What is ruined?   I don't see anything ruined :/

Thanks Radio

I will include your question in the wrap - maybe someone will take up your challenge :)

Does it have to be a ruler and pair of compasses?

It might be fun to try and construct it using co-ordinate geometry and Desmos graphing calculator :)

Depends on what kind of graph you want to make.

I use Desmos a lot

$$\\7^x+2<371293-x\\$$

$$7^x+2>2\qquad $always$$$

Mmm, I wonder how a fish can drown?  

-6+-7=-6-7=-13

if this is what you mean, the answer will always be negative  

BUT

-6 - - 7 = -6+7= +1

-6- - 2 = -6+2 = -4

5 - - 12 = 5+12 = +17

This is how you find the angle sum of any polygon. 

Start at one vertex and draw diagonals from it to each of the other vertices.

Count the number of triangles and multiply the number by 180 degrees   

Not quite Jay Cole

First I am goingto put brackets around 3c because I think that is what you really want - 

I am mindreading I appologise if I get it wrong

(5c-8d/[3c]) - (2c-10d/[3c])

$$\\(5c-\frac{8d}{3c}) - (2c-\frac{10d}{3c})\\\\
=5c-\frac{8d}{3c} -1 (2c-\frac{10d}{3c})\\\\
=5c-\frac{8d}{3c} -2c+\frac{10d}{3c}\\\\
=5c-2c-\frac{8d}{3c} +\frac{10d}{3c}\\\\
=3c+\frac{-8d+10d}{3c}\\\\
=3c+\frac{2d}{3c}\\\\$$

Thanks Alan,

I have added this calc to our "Reference Material" sticky thread. 

It is in the calculator section - there are other good statistic calcs there as well. 

I refer to this thread almost every day.  

It would be good if all answerers familiarized themselves with what is in there.