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mihanwolf2014
@mihanwolf2014
July 2022
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Решите уравнение:
а)3(0,9x-1)-(x+0,6)=-0,2;
б)7-(3,1-0,1y)= -0,2y.
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19980210v
А) х=2.
а в задании б точно после семи минус. или там умножение?
3 votes
Thanks 2
mihanwolf2014
да там минус
mihanwolf2014
точно
mihanwolf2014
а решение есть?
19980210v
3 (0,9х-1)-(х+0,6)=-0,2 ; 2,7х-3-х-0,6+0,2=0; 1,7х-3,4=0; 1,7х=3,4; х=2
19980210v
7-(3,1-0,1у)=-0,2; 7-3,1+0,1у+0,2у=0; 3,9+0,3у=0; 0,3у=-3,9; у=-13
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Answers & Comments
а в задании б точно после семи минус. или там умножение?