1.

(v)9×81"=272-x

Answer»

9*9^2x = 27^2-x

3²*3^4x = 3^3(2-x)

3^(4x+2) = 3^3(2-x)

4x+2 = 6-3x

4x+3x = 6-2

7x = 4

x = 4/7

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