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Sauron [17]
3 years ago
7

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

Mathematics
1 answer:
VLD [36.1K]3 years ago
6 0
X-9=12
x-9+9=12+9
You need to add 9 to each side of the equation.
x=21
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