Question is on a picture

-9

Step-by-step explanation:

When you plug in the numbers you get the equation 4* (-6) + 5*3

When you solve it out you get -24 + 15. This equals -9.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

jml angle lkj & angle mj = lm