1,9-0,5(7-3х)=0,4(6+4х ришить
tolyupa2000
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16.05.2021 11:23
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1
1.9-3.5+1.5х=2.4+1.6х
-1.6-2.4=3.1х
-4=3.1х
х=40/31
х=1 9/31