YouTube on MSNOpinion

Using substitution to solve a system when multiple variables have a coefficient of 1

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

Solving linear equations - AQA

Solving an equation means finding the value or values for which the two expressions on each side of the equals sign are equal. One of the most common methods used to solve equations is the balance ...
BBC

Solving linear equations - Eduqas

Solving an equation means finding the value or values for which the two expressions on each side of the equals sign are equal. One of the most common methods used to solve equations is the balance ...