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Question

Question 1(d) :

Sove:

57+13

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Solution

57, 13 are unlike fractions because their denominators are different.

The LCM of the denominators of the given fractions i.e. the L.C.M. of 7 and 3 is 21.

57+13=5×3+7×121=15+721=2221=1121


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