x+3+(-4)+6=21

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Solution for x+3+(-4)+6=21 equation: 



x+3+(-4)+6=21

We move all terms to the left:

x+3+(-4)+6-(21)=0

determiningTheFunctionDomain
x+3+6-21+(-4)=0

We add all the numbers together, and all the variables

x-16=0

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

x=16

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