The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own.

The Algebra 1 course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; Extension of the concept of a function; Exponential …

Learn the basics of algebra—focused on common mathematical relationships, such as linear relationships.

Systems of equations overview Introduction to systems of equations Equivalent systems of equations and the elimination method Solving systems of equations with substitution

The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic expressions.

It doesn't necessarily matter whether this will be useful in real life, the main point of doing any type of complicated math is to train your brain to use different ways of thinking to come to solutions.

Learn to solve the system of equations -3x - 4y = -2 and y = 2x - 5 using substitution.

Linear equations with variables on both sides Learn Why we do the same thing to both sides: Variable on both sides Intro to equations with variables on both sides Equations with variables on both sides: …

Explore key 7th‑grade math skills aligned with New York’s Next Generation standards, including ratio reasoning, proportional relationships, integer operations, expressions, equations, and geometry.

To solve a system of equations using substitution... 1. Isolate one of the variables in one of the equations, e.g. rewrite 2x+y=3 as y=3-2x. 2. You can now express the isolated variable using the …