Question

Find all those numbers x on the number line that are twice as far from 2 as they are from 10.

Answer 1

|x-2|=2|x-10|
If x>10, x-10 and x-2 are both positive, so we have
x-2 = 2(x-10)
x=18

Now check for another answer when 2<x<10 or x<2

Answer 2

Thank you Steve