1. Solve for $$3^{x}-3^{x-1}=486$$





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  • By: anil on 05 May 2019 01.53 am
    Given , $$3^{x}-3^{x-1}=486$$
    $$3^{x}-frac{3^{x}}{3}=486$$
    Taking $$3^{x}$$ as common
    $$3^{x}(1- frac{1}{3})=486$$
    $$3^{x}=729$$
    $$3^{x}=3^{6}$$
    Hence , x = 6



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