An equation is a mathematical statement showing that two expressions are equal. The two expressions are linked with an equals symbol (=). The unknown variable (often the letter \(x\)) can take any ...

Some equations have letters on each side of the equals sign, for example: \(4(k + 7) = 12k - 4\) Solve this equation by rearranging all the letters onto one side of the equation and all numbers onto ...

Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...