Exponential Equations

3^1-2x=243

Well, anything to the power of 1 is that number itself.
So this would be:
3-2x = 243
subtract 3 from both sides to isolate the variable.
-2x = 240
Now just divide both sides by -2 to find x.

JazzyPooh234:

3^1-2x=243

Kitty has solved your question correctly
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but perhaps you really meant

3^(1-2x) = 243
you have to be really careful to include brackets when you need to. Of course if you had used the sup button that is located above the smilies, there would not have been a problem because you question would look like this

3 ^1-2x = 243
Since this is what I think you meant I will help you solve it.
3 ⁵=243
so
3 ^1-2x = 3 ⁵
equating the indices we have
1-2x = 5
etc