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The addition of the rational numbers 0 and $− 2 5$ is:

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− 3 5

− 1 5

− 2 5

− 7 5

answer is C.

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Detailed Solution

Given 2 rational numbers 0 and

− 2 5

.
Firstly, finding the L.C.M of denominator.
Prime factors of

1 = 1

.
Prime factors of

5 = 1 × 5

.
L.C.M of 1 and 5 is,

= 1 × 5 = 5

Now, simplifying the given expression.

= 01 × 55 + − 2 5 × 11 = 05 + − 2 5

= 0 + − 2 5 = 0 − 2 5 = − 2 5

The addition is

− 2 5

.
Hence, option 3 is correct.

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