7x-4=255

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Solution for 7x-4=255 equation: 



7x-4=255

We move all terms to the left:

7x-4-(255)=0

We add all the numbers together, and all the variables

7x-259=0

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

7x=259

x=259/7

x=37

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