Example:
2/9+5/9
=2+5/9
=7/9
Subtract the denominator fraction, the denominator remains the same, and the numerator is subtracted, which will eventually become the simplest fraction.
Example:
5/9- 1/9
=5- 1/9
=4/9
Steps to reduce:
1, numerator and denominator decomposition factor.
2. Find the common factor of numerator and denominator.
3. Exclude non-zero common factors.
If the greatest common divisor of numerator and denominator can be seen quickly, it is easier to divide by their greatest common divisor directly.