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@Балжанушка
July 2022
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решите уравнение, 2) 5(х-1)-4(х-3)=-20 3) 0,6(х-0,6)+0,8(х-0,4)=1
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Dan2407
Verified answer
5*(х-1)-4*(х-3)=-20
5х-5-4х+12=-20
х+7=-20
х=-20-7
х=-27
0,6*(х-0,6)+0,8*(х-0,4)=1
0,6х-0,36+0,8х-0,32=1
1,4х-0,68=1
1,4х=1+0,68
1,4х=1,68
х=1,68:1,4
х=1,2
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Answers & Comments
Verified answer
5*(х-1)-4*(х-3)=-205х-5-4х+12=-20
х+7=-20
х=-20-7
х=-27
0,6*(х-0,6)+0,8*(х-0,4)=1
0,6х-0,36+0,8х-0,32=1
1,4х-0,68=1
1,4х=1+0,68
1,4х=1,68
х=1,68:1,4
х=1,2