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15-09-2020
Mathematics

contestada

-a + 4a - 9 = 8a + 6

Respuesta :

952028048 952028048

15-09-2020

Answer:

-3=a

Step-by-step explanation:

-a+4a-9=8a+6

3a-9=8a+6

3a-9-6=8a+6-6

3a-15=8a

3a-3a-15=8a-3a

-15=5a

-15/5=5a/5

-3=a

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