Respuesta :

anuuuuuu123456

Answer:

2×r=2r

2r×9=18r

Hope this helps:)

Answer:

9(2r)

Step-by-step explanation:

2×r =2r

9×2r can be written as 9(2r)

We could write this as 18r but it is best to leave it at 9(2r)

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