Total score: according to the basic properties of scores (formulas), the process of converting several scores (formulas) with different denominators into scores (formulas) with the same denominator as the original scores (formulas).
Steps to reduce:
1, numerator 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. take for example
Is the simplest score.
Steps to share:
1, find the common denominator. (The common denominator can be the least common multiple of two or more numbers)
2. Then change the denominator of two or more fractions that need division from different denominators to the same denominator.
For example, if 2/3 is divided by 3/7, first find the common denominator of 3 and 7, that is, 2 1, then (2x7)/(3x7)= 14/2 1, (3x3)/(7x3) = 9/2/kloc-.
So after dividing by 2/3 and 3/7, it is 14/2 1 and 9/2 1.
Extended data:
The basis of reduction and general division;
Both general and approximate fractions are based on the basic properties of fractions (formulas): the numerator and denominator of fractions (formulas) are multiplied or divided by a number (formulas) that is not equal to zero, and the size of fractions (formulas) remains unchanged. The denominator remains the same, and the denominator on the other side is cross-multiplied.
Try to calculate by mouth when dividing, and generally use the common divisor of the numerator denominator (except 1) to remove the numerator denominator of the fraction; Usually, we have to separate it until we get the simplest score.
The key to general division is to determine the simplest common denominator of several fractions, and the steps are as follows:
1, which respectively lists the divisors of each denominator;
2. Multiply the divisor of the denominator. If there is a common divisor, the result is the least common multiple of the denominator;
3. All the letters or factors based on letters should be taken;
4. The factor with the same letter or the power of the factor with the letter takes the largest exponent;
5. Multiply all the above formulas to get the simplest common denominator.