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- 27 ^ 1 - x = 9 ^ 2x + 3
- 27 = 3 ^ 3
- 9 = 3 ^ 2
- 3 ^ 3(1 - x) = 3 ^ 2(2x + 3)
- Get rid of the base 3 on both sides and just leave the exponents.
- 3(1 - x) = 2(2x + 3)
- 3 - 3x = 4x + 6
- -3 = 7x
- x = -3/7
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