3 x + 1 2 = 2 x 1 3 3 x + 1 3 1 = 2 x 1 2 1 3 x + 1 1 = 2 x 1 1 3 x = 2 x 2 3 x 2 x = 2 2 ( 3 2 ) x = 2 2 ln ( 3 2 ) x = ln ( 2 2 ) x ln ( 3 2 ) = 2 ln 2 x ( ln 3 ln 2 ) = 2 ln 2 x = 2 ln 2 ln 3 ln 2 3^{ x+1 } cdot 2 = 2^{ x-1 } cdot 3 newline 3^{ x+1 } cdot 3^{-1} = 2^{ x-1 } cdot 2^{-1} newline 3^{ x+1-1 } = 2^{ x-1 -1} newline 3^{ x } = 2^{ x-2} newline {3^{ x }} over {2^{x}} = {2^-2} newline left({3} over {2}right)^x = {2^-2} newline ln left({3} over {2}right)^x = ln left( {2^-2} right) newline x cdot ln left({3} over {2}right) = -2 cdot ln {2} newline x cdot left( ln {3} - ln {2}right) = -2 cdot ln {2} newline x = -2 cdot {{ln {2} } over { ln {3} - ln {2}}} newline