1,5(3х-9)=3(0,5х-7)
4.5х-13.5=1.5х-21
4.5х-1.5х=-21+13.5
3х=-7.5
х=-2.5
Ответ: -2.5.
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1,5(3х-9)=3(0,5х-7)
4.5х-13.5=1.5х-21
4.5х-1.5х=-21+13.5
3х=-7.5
х=-2.5
Ответ: -2.5.