You can simply go back to your Analytic Geometry in college days. The idea is to get the equations of the two intersecting lines then equate variables.
Please give me example friend.Thank you
It can be done by the geometry in this way...see below;
1. take Y2-Y1/X2-X1 = H
2. take X3-X4/Y3-Y4 = G
Cal for X:
(Y3-1/GxX3-Y1+HxX1) / (H-1/G) = L
Cal for Y: