20=4^2x-3

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Solution for 20=4^2x-3 equation: 



20=4^2x-3

We move all terms to the left:

20-(4^2x-3)=0

We get rid of parentheses

-4^2x+3+20=0

We add all the numbers together, and all the variables

-4^2x+23=0

We move all terms containing x to the left, all other terms to the right

-4^2x=-23

x=-23/1

x=-23

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