Learn how to solve a system of equations by substitution. To solve a system of equations means to obtain a common values of ...

Make sure you are confident in solving one and two-step linear equations and expanding brackets in order to tackle these more complex types of equations. Substitute close substituteIn algebra, to ...

An algebraic equation contains one or more letters in it. Each letter in the equation is called a variable. A variable can change in value. We guess at different values for each letter until our ...

👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are ...