128=2^2x+3

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Solution for 128=2^2x+3 equation: 



128=2^2x+3

We move all terms to the left:

128-(2^2x+3)=0

We get rid of parentheses

-2^2x-3+128=0

We add all the numbers together, and all the variables

-2^2x+125=0

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

-2^2x=-125

x=-125/1

x=-125

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