Final answer:
To identify which system of equations would not have the solution (1,3), we substitute these values into the modified equations. We conclude that option D requires a closer look as it combines modified versions of both original equations, potentially altering the solution.
Step-by-step explanation:
We are given a system of linear equations with a known solution (1,3) and variables A, B, C, D, E, and F. To determine which system would not have (1,3) as the solution, we can substitute the values x = 1 and y = 3 into each system and see if both equations in the system are satisfied.
Analysis of Options
Option D is potentially concerning because it modifies both equations before combining them, which could change the validity of the solution (1,3). We should check this option more closely.