Đáp án:
`[(8x-12) :4]. 3^3 = 3^6`
` => (8x-12):4 = 3^3`
` => 8x - 12 = 3^3 .4`
` => 8x -12 =108`
` => 8x = 120`
` = x = 15`
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` 41 -2x + 1 = 9`
` => 42 - 2x = 9`
` => 2x = 33`
` => x = 33/2`
--------
` 5^{2x} - 3. 2. 5^2 = 5^2.3`
` => 5^{2x} - 150 = 75`
`=> 5^{2x} = 225`
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`3^{2x-4} - x^0 = 8`
` => 3^{2x -4} -1 = 8`
` => 3^{2x-1} = 9 = 3^2`
` => 2x -1 = 3`
` => 2x = 4`
` => x = 2`
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`30 - [4.(x-2) + 15] = 3`
` => 4.(x-2) + 15 = 27`
` => 4(x-2) = 12`
` =>x -2 = 3`
` => x = 5`
---------------
` 65 - 4^{x+2} = 2014^0`
` => 65 - 4^{x+2} = 1`
` => 4^{x+2} = 64 = 4^4`
` => x +2 = 4`
` => x = 2`
-------------------
` 740 : (x+10) = 10^2 - 2.13`
` => 740 : (x+10) = 74`
` => x + 10 = 10`
` => x = 0`
---------------
`120 + 2.(3x-17) = 214`
` => 2.(3x-17) = 94`
` => 3x -17 = 47`
` => 3x = 64`
` => x = 64/3`
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` 5^{2x-3} - 2.5^2 = 5^2.3`
` => 5^{2x-3} - 50 = 75`
` => 5^{2x-3} = 125 = 5^3`
` = 2x -3 = 3`
` => 2x = 6`
` => x = 3`
