3x-21=360

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Solution for 3x-21=360 equation: 



3x-21=360

We move all terms to the left:

3x-21-(360)=0

We add all the numbers together, and all the variables

3x-381=0

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

3x=381

x=381/3

x=127

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