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A fraction is a number consisting of one or more parts of a unit.

There are 2 formats for recording fractions: ordinary (the ratio of two integers, they are also called the numerator and denominator, for example 2/3) and decimal, for example 1.4567.

Since the addition of decimal fractions occurs in the same way as ordinary fractions, we consider the addition of ordinary ones.

You will need

• Elementary knowledge in mathematics.

Instructions

1

Suppose you have two fractions: 1/7 and 2/3. Let us find the common denominator of these fractions. It is equal to the product of their denominators, that is, 7 * 3 = 21.

2

We give the fractions to the common denominator. For this, we multiply the numerator of the first fraction by the denominator of the second, and the numerator of the second fraction by the denominator of the first, with the denominators of both fractions becoming equal to 21. We obtain the following: 3/21 and 14/21.

3

We add these fractions, as a result of which we obtain oneFraction with common denominator. For this we add the numerators of the reduced fractions. The denominator will remain the same. That is, we get: 3/21 + 14/21 = 17/21. 17/21 and will result in the addition of 1/7 and 2/3.