 ## Book: RD Sharma - Mathematics

### Chapter: 1. Rational Numbers

#### Subject: Maths - Class 8th

##### Q. No. 4 of Exercise 1.1

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##### Add and express the sum as a mixed fraction:(i) and (ii) and (iii) and (iv) and (i) The denominators of the given rational numbers 5 and 10 respectively.

The L.C.M of 5 and 10 is 10

Now,

We write the given rational numbers into forms in which both of them have the same denominator = And, = Therefore, + = = = 1 (ii) The denominators of the given rational numbers 7 and 4 respectively.

The L.C.M of 7 and 4 is 28

Now,

We write the given rational numbers into forms in which both of them have the same denominator = And, = Therefore, - = = = 1 (iii) The denominators of the given rational numbers 6 and 8 respectively.

The L.C.M of 6 and 8 is 24

Now,

We write the given rational numbers into forms in which both of them have the same denominator = And, = Therefore, - = = = -8 (iv) The denominators of the given rational numbers 6 and 8 respectively.

The L.C.M of 6 and 8 is 24

Now,

We write the given rational numbers into forms in which both of them have the same denominator = And, = Therefore, + = = = 17 1
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