Answer:
this is tricky b/c they are making the two triangles of different scales but of the same angles.... soooo one is just a bigger copy of the other....
Explanation:
Since this is a relation of the two side of each.. we can say the following...
=
where X = side LA soooo solve for X
x *
= 4 (move the X , to the other side of the '=' sign
x = 4 *
( yes.. we want to invert the fraction to move it to the other side )
x =
x = 6
so side LA is 6 :)