-
1. In this problem, the forward substitution method is used to solve the equation system.
在这个问题上，使用向前替换法来解这个方程组。
-
2. The forward substitution method is a powerful tool for solving complex systems of equations.
向前替换法是解决复杂方程系统的一个有力工具。
-
3. Forward substitution is a technique that allows us to solve equations by substituting one variable with another.
向前替换是一种技术，它允许我们通过将一个变量替换为另一个变量来解决方程。