# Thread: simplify and elminate y

1. ## simplify and elminate y

having trouble with a word problem,

what i end up with is C = K(x+2y)+2kx

and xy= 3750, so I know y = 3750/x

to eliminate y, would the next step be to simplify C=k(x+3750/x) + 2kx?

2. my error, the next should be C=k[x+2(3750/x)] + 2kx?

3. solved, I must have had a brainfart