Question

If 3^( x-y) = 27 and 3^ ( x+y ) = 243, then x is equal to

Answer 1

3^(x - y) = 3^3

So, x - y = 3 --(i)

Similarly, 3^(x + y) = 3^5
x + y = 5 --(ii)

Solving (i) and (ii),
2x = 8
x = 4

Hope This Helps You!

Answer 2

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