1,2(x-7)-1,6(8-x) если х=4,2. Created by rungagagu12.

1,2(x-7)-1,6(8-x) если х=4,2

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1,2(x-7)-1,6(8-x) если х=4,2

chochooo 1,2(х-7)-1,6(8-х)=1,2х-8,4-12,8+1,6х= 2,8х-21,2
если х=4,2
2,8х-21,2=2,8•4,2-21,2= 11,76-21,= -9,44

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