3x-21=2+5

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Solution for 3x-21=2+5 equation: 



3x-21=2+5

We move all terms to the left:

3x-21-(2+5)=0

We add all the numbers together, and all the variables

3x-21-7=0

We add all the numbers together, and all the variables

3x-28=0

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

3x=28

x=28/3

x=9+1/3

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