Ответ:
-2,7(4b+5)-(1,2b-4,5)-(-5,6b+1)
-10,8b-13,5-1,2b+4,5+5,6b-1
-6,4b-10
-9,6-10
-19,6
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Ответ:
-2,7(4b+5)-(1,2b-4,5)-(-5,6b+1)
-10,8b-13,5-1,2b+4,5+5,6b-1
-6,4b-10
-9,6-10
-19,6