# Exponential equations

Solve for x:

10^x + 6(10^-x) = 7

and also:

3^3x+2 * 8^-x = 4

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#### Solution Preview

To simplify the problem,

let 10^x = y and 10^-x = 1/y

Therefore, equation becomes: y + 6 (1/y) = 7

Using a as a common denominator: ...

#### Solution Summary

This shows how to solve exponential equations.

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