(2x-4)=42

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Solution for (2x-4)=42 equation: 



(2x-4)=42

We move all terms to the left:

(2x-4)-(42)=0

We get rid of parentheses

2x-4-42=0

We add all the numbers together, and all the variables

2x-46=0

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

2x=46

x=46/2

x=23

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