Respuesta :

Answer:

1010 base 9 Changing from base to decimal we start from left side digit and multiply by base

1000 * 9^3 = 729

1 * 9 = 9

We sum and get 738

85 base 9 =

8 * 9 = 72

5 = 5

We sum 72 + 5 = 77 decimal

738 - 77 = 661 decimal

and if the answer must be in base 9 then:

661 decimal = 814 base 9

Step-by-step explanation:

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