Melody

Morgan Tud contributed this thread a while back.

Thank you Kitty.  How pretty, and informative is that!  

Another from Heureka.  Thank you

Thanks Heueka,

It probably was the graphical answer that was desired. I didn't even think of that.  

I like your \underbrace{}_

Heureka, I do not think that I have seen you use that before.  

Another for me to try and remember and make use of.  Thank you.

Technically you do not transer them from one side to the other.

you add or subtract or whatever from BOTH sides.

Maybe this was a trick question Rosala.

WOW 

Alan are you saying i was right!   That's amazing! 

You are right Rosala this is not a question. 

Let's see if it is -8.

3c + 4 = -20.

left hand side = 3*c+4

you have to replace the c with -8

-----------------------------

left hand side

= 3*-8+4

multiply before add and pos*neg=neg so 3*-8=-24

= -24+4

Start at -24 on the number line and go 4 places in the positive direction (because you are plussing)

=-20

= right hand side   

So yes anonymous, you are correct!   VERY GOOD WORK.   

Thanks anonymous and hello Alan,

Yes I can instantly see the logic behind the 2*5 but I will have to think about the -1   

Who  am I trying to kid - I do not have a clue

We should hire ourselves out to make plausable multilple choice answers for these types of questions.

(Sorry that was a bit offensive - maybe just I should hire myself out.  Maybe Chris would like to help me?)

I wonder if anyone would pay us for that? 

Why is it 2*5-1?     I don't see any intrinsic logic behind the -1