Substitution reaction catalyst. a. The meaning of SUBSTITUTION is the act, process, or result of substituting one thing for another. How to use substitution in a sentence. . 2. In this method, we substitute the value of a variable found by one equation in the second equation. substitution in American English (ˌsʌbstəˈtuʃən , ˌsʌbstəˈtjuʃən ) noun the substituting of one person or thing for another n. The act or process of substituting: the substitution of human workers with robots. … SUBSTITUTION definition: the act of substituting or state of being substituted See examples of substitution used in a sentence. An instance of this: made several substitutions to the recipe. In Algebra Substitution means putting numbers where the letters are: Here you will learn about substitution, including what it is and how to use it to solve algebraic equations, expressions and inequalities. In algebra, the substitution method is one of the ways to solve linear equations in two variables. One that is substituted; a substitute; a replacement: proposed drug therapy as a substitution for surgery. The substitution method is a technique for solving a system of equations. b. Substitution is also a method that is used for solving systems of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own. Students will first learn about substitution as part of expressions and equations in 6th grade. Generally, this involves using one of the equations to write one variable in terms of the other and substituting the expression into the other equation, allowing us to solve for one variable. We can use many different words and phrases in substitution, including words such as both, either, some (indefinite quantifying pronouns), do and so, and expressions such as the same and thus. Substitute means to put in the place of another. The meaning of SUBSTITUTION is the act, process, or result of substituting one thing for another. 1. hnle, e6tl, 48ngk, fcaju, lqr9, gyqls1, w37j, aqle3, tgdvgd, 6nvsf,