1) =1/3*3(х-2)-2/7*7(х-3)=9
(х-2)-2(х-3)=9
х-2-2х+6=9
-х=5
х=-5
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Answers & Comments
1) =1/3*3(х-2)-2/7*7(х-3)=9
(х-2)-2(х-3)=9
х-2-2х+6=9
-х=5
х=-5
1,8у=-9,6
у=16/3
(не уверен)