Question

what is the extraneous solution of -x=2x+15

Answer 1

extraneous solution is a solution that works

lets solve for x

-x=2x+15
-3x=15
x=-5

Does that work?
-(-5) = 2 (-5) + 15
5= -10 + 15

So what's the extraneous solution ?

Answer 2

extraneous solution is a solution that works for the simplified equation that doesn't work for the original equation.

Answer 3

I didn't know that this is the definition, tnx for telling me myinimaya.

(didn't want to disturb you by tagging)

Answer 4

lol It would have been fine.

Answer 5

Alright, ty either way :)