3.x-1=20

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Solution for 3.x-1=20 equation:



3.x-1=20
We move all terms to the left:
3.x-1-(20)=0
We add all the numbers together, and all the variables
3.x-21=0
We move all terms containing x to the left, all other terms to the right
3.x=21
x=21/3.
x=7

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