Mathematics, 22.01.2022 09:30 at28235

5. Select all the equations that are equivalent to n-9 = 12. On-n-9 = 12 - n On-9+ 12 = 12 -9 Qin-9 + 9 = 12 + 9
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On-9-n= 12 - n On-9+9 = 12 - 12

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5. Select all the equations that are equivalent to n-9 = 12. On-n-9 = 12 - n On-9+ 12 = 12 -9 Qin-...