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Question

For x=13 and y=27, verify that x+y=y+x [2 MARKS]

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Solution

Concept : 1 Mark
Calculation : 1 Mark

For x=13 and y=27

L.H.S = x+y=13+27

=721+621=7+621=1321--------(i)

now, R.H.S = y+x=27+13

=621+721=1321-------(ii)

From (i) and (ii) x+y=y+x.
Hence verified.

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