Question

Номер 354 1 и 2. Помогите, пожалуйста!

Answer 1

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Answer 2

1) 18×(1/3-1/9) = 18×(3/9-1/9) = 18×2/9 = 36/9 = 4
2) (2-3/4-4/5)×20 = (2-0.75-0.8)×20 = 0.45×20 = 9