Let the implicit equations for a line L1 in R4 be:

-x1 + x1 = 0

-2x1 + x3 = -1

x1 - x4 = 0

Let the implicit equations for another line L2 in R4 be:

5x1 + x2 = 6

x1 + x3 = 2

x4 = 1

Find the implicit equations for the plane containing L1 and L2.

*I'm thinking the strategy to this is converting L1 and L2 in to parametric form first, and I'm not sure where to go from there*