How to Use Substitution to Solve a System of Equations: Word Problems
Solving systems of equations is a fundamental concept in algebra, and it counts for a lot in various fields such as engineering, physics, and economics. One popular method to solve these systems is substitution, which involves substituting one variable with an expression from another equation. This article aims to provide a comprehensive guide on using […]
How to Use Elimination to Solve a System of Equations: Word Problems
To solve a word problem by elimination, define two variables, write one equation for each fact in the problem, then add or subtract the equations (after multiplying if needed) so one variable cancels. Solve for the remaining variable and substitute back. For example, if 2 apples and 3 pears cost $13 and 2 apples and […]
