Ответ:
1,5*(8х-6у)-(5у-3х)*2,4=12х-9у-(12у-7,2х)=12х-9у-12у+7,2х=19,2х-21у
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Ответ:
1,5*(8х-6у)-(5у-3х)*2,4=12х-9у-(12у-7,2х)=12х-9у-12у+7,2х=19,2х-21у