According to the experience gained from doing the problem, the essence of general division is to convert two different formulas into equivalent denominators for corresponding operations. Such as: 4/3+3/4 =? Step 1: Find out their common factors. For example, the common factor of the topic is 12 (essentially turning them into equivalent denominators), that is, 4/3 =12+16; Three quarters =/kloc-9 of 0/2. Then 4/3+3/4 =12/16+12/9 =12/25.

The essence of reduction is simplification, that is, reducing a large number to a small number to make the operation easier. Such as: 3 in 9+2 in 6 =? Step 1: Simplify 3/9 =1; 2/6 = 1, then 3/9+2/6 = 1+ 1 = 2/3.

General fractions and approximate fractions are very common and important in mathematical arithmetic, very important and very important. I hope this person's experience can help you.