Ответ:
13b-6
Объяснение:
13b-(9b-(8b-(6-b))) = 13b-(9b-(8b-6+b) = 13b-(9b-8b+6-b) = 13b-(9b-9b+6) = 13b-6
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Ответ:
13b-6
Объяснение:
13b-(9b-(8b-(6-b))) = 13b-(9b-(8b-6+b) = 13b-(9b-8b+6-b) = 13b-(9b-9b+6) = 13b-6