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Q.

Add the rational numbers $− 5 36$ and $− 7 12$ . The answer is:

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a

− 13 17

b

− 13 16

c

− 13 18

d

− 13 19

answer is C.

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Detailed Solution

Given 2 rational numbers

− 5 36

and

− 7 12

.
L.C.M of 36 and 12 = 36.
Making the denominator 36 of both rational numbers,

= − 5 36 × 1 and − 7 × 3 12 × 3 = − 5 36 and − 21 36

Now adding both,

= − 5 36 + − 21 36 = − 5 − 21 36 = − 26 36 = − 13 18

The answer is

− 13 18

.
Hence, option 3 is correct.

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Add the rational numbers −5 36 and −7 12 . The answer is: