Add, subtract, multiply, and divide fractions with simplification and a decimal conversion.
Numerator of the first fraction. Example: 1 for 1/3.
Denominator of the first fraction — must not be zero. Example: 3.
Arithmetic to perform: add, subtract, multiply, or divide.
Numerator of the second fraction.
Denominator of the second fraction — must not be zero.
Result (Simplified)
7/12
The exact simplified fraction result (e.g., 7/12, or 2 when denominator is 1).
Decimal
0.583333
The same result as a decimal for quick comparison.
What this means
Applies exact fraction arithmetic, then reduces the result by the greatest common divisor.
Do arithmetic with two fractions and get the simplified result plus its decimal equivalent, with results like 1/3 + 1/4 = 7/12.
Formula
a/b + c/d = (ad + cb)/bd, simplified by the greatest common divisor
Worked examples
FAQ
How do you add fractions with different denominators?
Find a common denominator (a × b), convert each fraction, combine the numerators, then simplify using the GCD.
What about dividing fractions?
Invert the second fraction and multiply. For example, (1/2) ÷ (3/4) = (1/2) × (4/3) = 2/3.
Limitations