Kelly sells lamps. she marks them down 17%. write two expressions to represent the sale price. let (c) represent the original cost of the lamp.

Think you can do it its possible and if you can't I will tell you

M is the midpoint of the line. Imagine a line LN with a midpoint of M in the middle.

So,

4+x-1= 3x-1 (the two half segments equal the whole line)

Combine like terms.

3+x= 3x-1

Add one to the other side.

4+x= 3x

Subtract x on both sides.

4=2x

Divide by 2.

x=2 

I hope this helps!
~kaikers