Algebra is used in Maths when we do not know the exact number in a calculation - this unknown value can be replaced with a letter. We solve an equation by working out the value for one letter.

Having lowered the bar for the sense in which we hope to solve a system of linear equations, one might wonder whether this quantum algorithm 3 offers a real advantage over classical computing at all.

Other unsolved mathematical mysteries are akin to the branches of trees. The trees themselves—fields within the wider subject ...

We can guarantee that x is between 1 and 9 by saying that x solves the equation ... such as algebra, analysis, combinatorics ...

He revolutionised algebra ... both sides of an equation to consolidate or cancel terms. However, al-Khwārizmī used words to explain mathematical problems, and diagrams to solve them rather ...