We have looked at how to solve equations with one unknown value, but what happens when there are two unknown values? An equation with two unknown values will have infinitely many solutions. or \(x=100 ...

Simultaneous equations are two linear equations that can be solved using bar models. By remembering that the same letter will always have the same value we can work out the missing values. To solve ...

Human development is influenced by, but not entirely determined by, our parents and our genes. Children may have very different personalities, and different strengths and weaknesses, than the ...