x+(-21)=10

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Solution for x+(-21)=10 equation: 



x+(-21)=10

We move all terms to the left:

x+(-21)-(10)=0

determiningTheFunctionDomain
x-10+(-21)=0

We add all the numbers together, and all the variables

x-31=0

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

x=31

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