In algebra, letters are used when numbers are not known. Algebraic terms, such as \(2s\) or \(8y\), leave the multiplication signs out. So rather than \(2 \times s\), write \(2s\), and rather than \(8 ...

Save guides, add subjects and pick up where you left off with your BBC account. The denominators of each fraction are different, \(3t\) and \(7t\), so a common denominator must be created. This is ...

Research focusing on algebra from primary to early secondary school level has made several major advances over the past decades. Students' difficulties have been identified and supportive teaching and ...