Question

In isosceles triangle ABC AB~CB. If AB=2x+17, CB=4x-13, and AC=2x+16, find the value of x.

Answer 1

set the expressions for AB and CB equal to each other and solve for x.

Answer 2

but what about AC?

Answer 3

AC is irrelevant because you don't know anything about it. you're only finding x. you set AB and CB equal to each other because they are the same length.

Answer 4

Okay, thank you.