Respuesta :

BoujeeAngel

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x - 9.9 = 2.1

+ 9.9 to both sides

x = 12

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SneeryEmperor51

Answer:

X = 12

Step-by-step explanation:

X - 9.9 = 2.1

Add 9.9 to both sides

X - 9.9 + 9.9 = 2.1 + 9.9

Simplify

X = 12

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