2x+(-3)=21

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Solution for 2x+(-3)=21 equation: 



2x+(-3)=21

We move all terms to the left:

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

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

We add all the numbers together, and all the variables

2x-24=0

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

2x=24

x=24/2

x=12

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