Simplify Calculator

This calculator simplifies an algebraic expression in one variable and reduces a fraction to lowest terms. Type something like 3x + 2(x - 4) + 5 and it expands the brackets, collects like terms and prints the result in descending powers, along with the degree, the leading coefficient and how many terms are left. The fraction mode takes a numerator and a denominator and returns the reduced fraction, the common divisor it removed, the decimal and the mixed number. It handles plus, minus, multiplication, whole-number powers and division by a plain number, so it will not simplify radicals, trigonometric terms or an expression that mixes two different letters.