Explain the concept of elimination in elimination mathematics.
In elimination mathematics, a variable or expression is eliminated by multiplying both sides of an equation by a constant number, or by dividing both sides by a constant, so that the variable or expression can be cancelled. This process is repeated until only one expression remains, which is then known as the unique solution of the equation.
In elimination mathematics, variables are eliminated from a problem by multiplying them by a factor. This factor can then be solved for, which in turn allows one or more of the original variables to be determined. This results in a simpler equation to solve, as fewer variables are involved.