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

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

Make sure you are confident in calculating with negative numbers, which is a skill often needed to solve equations. To solve the equation, do the inverse operation. The inverse of multiplying by 12 is ...

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 ...