A fraction subtraction example, the kind that comes up measuring or cutting material to length.
Enter two fractions and an operation, and this computes the result already simplified to its lowest terms — for example, 2/4 + 1/4 gives 3/4, not 6/8, since the simplification is applied automatically rather than left for you to do by hand.
Addition and subtraction use a common denominator (the product of both denominators, then simplified back down); multiplication multiplies numerators and denominators directly; division multiplies by the second fraction's reciprocal. The result is also shown as a decimal alongside the simplified fraction, since both forms are useful depending on what you need it for.
Yes — enter a negative sign on the numerator (or denominator), and the result’s sign is handled correctly.
That’s undefined in mathematics — this tool will tell you directly rather than show a nonsensical result.
Not directly — convert a mixed number to an improper fraction first (1½ becomes 3/2) and enter that.