This appears to be a math problem written in Japanese. It seems to involve solving a system of equations, possibly with multiple variables. Let me break down the content based on the visible equations and the instructions.

1. The problem asks you to solve equations using methods like factorization and possibly substitution or elimination.
2. The equations visible are:
   • $x + y = 1$
   • $x - y = 1$
   • $2z - 3w = 1$
   • $x - 2z + 3w = 1$

It looks like you need to solve this system of equations with respect to the variables $x, y, z, w$. If you want, I can help guide you through the steps of solving it.

Would you like to proceed with solving this system? If so, do you need further clarification on any part of the problem?