=-1.5а - 2.5+5.4a-1.6b-3.8b+5.7a=-1.8a+1.5b
Ответ:-1.8a+1.5
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=-1.5а - 2.5+5.4a-1.6b-3.8b+5.7a=-1.8a+1.5b
Ответ:-1.8a+1.5
= (-1,5a + 5,4a + 5,7a) - (2,6b + 1,6b + 3,8b)
= 9,6a - 8b
= 8 (1,2a -b)