-8(5b+9)-(3+b)+4(9+5b)
-40b-72-(3+b)+4(9+5b)
-40b-72-3-b+4(9+5b)
-40b-72-3-b+36+20b
-21b-72-3+36
Ответ=-21b-39
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-8(5b+9)-(3+b)+4(9+5b)
-40b-72-(3+b)+4(9+5b)
-40b-72-3-b+4(9+5b)
-40b-72-3-b+36+20b
-21b-72-3+36
Ответ=-21b-39