Question

What is the length of AB

Answer 1

AB and BC are congruent, so 4x-2= 3x, solve for x and you get x=2.

Answer 2

Since line AB and line BC are congruent, you equal them to each, which will give the 'x' to substitute into line AB


`3x = 4x -2`

Subtract -4x from both sides of the equation.


`-x=-2`

Then divide -1 from both sides of the equation.


`x=2`

Then you do 3(2) which is 6.

The answer is B