1.Find lcm(least common multiple) of denominators in given equation.

2. Find equivalent fraction form.

3. Add the numerator and we get the answer.

Let’s see how to apply these rules, suppose we have an equation:

x/2 + y/4 =?

First of all take LCM of denominator i.e. 2 and 4, then we simplify numerator,

(2x + y)/4 this is final result of equation which have addition.

If you have to perform subtraction operation on rational number,

1. Find LCM of denominators in equation.

2. Find equivalent fraction form.

3. Subtract numerators.

4. Find results.

Like we have an equation -

p/12 - q/24 = ?

First of all we take l c m of 12 and 24 and we get 24 and then we simplify numerator.

(2p - q)/24 after subtracting q by 2p , we get final result of equation .

Multiplication on rational number ; We use these steps to solve multiplication operation on rational number-

1.Multiply the numerators.

2. Multiply the denominators.

3. Finally we get result.

Like we have an equation a/2 * b/4 = ?

then first of all we multiply numerator with numerator then we multiply denominator with denominator and finally we get result- ab/8

Division of rational numbers; we use following steps to perform divisibility on rational numbers-

1.Change fractions on second rational number like numerator is replace by denominator and denominator of second rational number is replace by numerator.

2. Change the sign with * means division is replace by multiplication.

3. Perform multiplication task on equation.

4. Find result of equation.

Like we have equation- 2/12 % 8/24 = ?

first of all we change second rational number as 24

then change sign with multiply ( * ) and perform task-

2/12 * 24/8 = ½ finally we get result ½.