2x-21=12

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Solution for 2x-21=12 equation: 



2x-21=12

We move all terms to the left:

2x-21-(12)=0

We add all the numbers together, and all the variables

2x-33=0

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

2x=33

x=33/2

x=16+1/2

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