Question

Solve -np - 80 > 60 for n. Show your work.


- Someone please explain to mee.

Answer 1

It's just algebraic manipulation like so:
\[\eqalign{
&-np-80\gt60 \\
&-np\gt60+80 \\
&-np\gt140 \\
&\frac{-np}{-p}\lt\frac{140}{-p} \\
&n\lt-\frac{140}{p}
}\]

Answer 2

Wow.. You made that look really easy. (x

Answer 3

Haha I try ;)

Answer 4

I suppose the trick is that when you have something of the form:
\[-a\gt x\]
Then:
\[a\lt-x\]

Answer 5

You have to flip the inequality sign around I suppose!

Answer 6

Noo, what you did is you went about it like this:
\[\eqalign{
&-np-80\gt60 \\
&-np\lt60+80
}\]
Your mistake is in line two, you do not need to switch the direction of the sign when adding and subtracting, just dividing and multiplying by a negative