If 3 = 27 and 3 = 243, then is equal to:

1.	If 3 = 27 and 3 = 243, then is equal to:
Answer» 3x - y = 27 = 33 x - y = 3 ....(i) 3x + y = 243 = 35 x + y = 5 ....(ii) On solving (i) and (ii), we get x = 4.

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