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23-11-2020
Mathematics

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3x + 8 + 4x - 9
O12x + 17
O7x-1
O7x+ 17

3x 8 4x 9 O12x 17 O7x1 O7x 17 class=

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Аноним Аноним

23-11-2020

Answer:

7x - 1

Step-by-step explanation:

3x + 8 + 4x - 9 = ?

3x + 4x = 7x

8 - 9 = -1

3x + 8 + 4x - 9 = 7x - 1

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