4x-20=400

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Solution for 4x-20=400 equation: 



4x-20=400

We move all terms to the left:

4x-20-(400)=0

We add all the numbers together, and all the variables

4x-420=0

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

4x=420

x=420/4

x=105

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