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20-02-2021
Mathematics

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Use algebra tiles to find the difference. Let one yellow tile equal +1 and one red tile equal –1. 12 – (–9)

Respuesta :

21-02-2021

Answer:

21

Step-by-step explanation:

12 - (-9)

Open The bracket :

Recall: - * - = +

Hence,

12 + 9 = 21

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