А) 5•(2-а)-4•(3а+1) б)1,1•(1-х)+1,2•(1+х) в)18•(b-3)+6•(3b+1)
dima2727
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02.08.2019 23:30
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3
б)=1.1-1.1х+1.2+1.2х=2.3+0.1х
в)=18б-54+18б+6=36б-48