NinjaDevo

Ok, I'm going to be that one person who gives you a completely impractical possibility for how to make -9.

Here it goes.

(3*7*9*4/6)*(9÷2÷3÷4÷5)-(18.45) = -9

Ohh! Thanks Alan.

I was thinking by the - symbol he meant a ^ symbol...but he really meant a minus sign!

This makes more sence, because I checked my work literally like 5 times and didn't find an error! :)

Perimeter is the sum of all of the sides of a shape.

For example, if we wanted to find the perimeter of this pentagon, we would add up all it's sides

3+3+3+3+3 = 15

The perimeter of this particular pentagon is 15.

That's an interesting trick, CPhill.

Let's try the example you gave:  .817(1717.....)

Add the repeating part to the non-repeating part.

817

Subtract the non-repeating part

817-8 = 809

Put this over 9's and 0's

809/990 = .817(1717...)

This seems to work pretty well, but I think I'll stick to solving it in the fraction form if possible!

-12 is the same thing as -12/1 so

(5/6)*(-12/1)        --- * means times

-60/6

This can be reduced to

-10/1

or just -10!

Thanks jboy.

I get what your saying with the whole fractions being the best answer thing. When I just turn everything into decimals on equations like this, sometimes I get answers like X = .454545 and I have no idea how to turn that into a fraction...but it's easy to turn a fraction into a decimal!

Thanks for the feedback guys, I appreciate it!

Thanks CPhill.

I'm not sure why I was getting tripped up on that one, but you explained it well.

"Thumbs up and points!"

This is a good point Melody, I should be carefull about this.

I was implying for this specific question that the extra 1/3 yard piece wouldn't be nessecary for this equation, beuase we are looking for whole pieces.

But the technical correct answer is actually 13.44444 pieces...

Thanks for the correction

Thanks Melody.

I must've just spaced that one. :)

86% isn't bad!

That's a good B+!

Glad to be a help. :)