Åk 6–9
1.2 History
The word equation comes from Latin’s aequa´tio, which means leveling out and comes from aequo, which means to be made equal. The purpose with equations is to find the unknown number, in other words to solve the equation.

Babylonians developed the basic methods for solving equations.
Egyptians could solve simple equation by trial like:
"ax = b".

In Greece, Diofantos wrote 13 books on the subject, one of them "Arithmetica", where he developed methods for solving first and second degree equation with one or more variables.

On Diofantos grave stone is the riddle:

During the 1500’s and 1600’s, Italian art explored the solution for solving more difficult equations. They delved into third and fourth degree equations. There were also competitions organized to solve these equations.