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Which of the following would you add to each side of the equation x-9=12 to get the variable by itself?
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Which of the following would you add to each side of the equation x-9=12 to get the variable by itself?

User Nikhil K R
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1 Answer

2 votes
x-9=12
x-9+9=12+9
You need to add 9 to each side of the equation.
x=21
User TallChuck
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