Предмет: Математика, автор: Аноним

срочно помогите 2 и 4

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Автор ответа: nataliapokotulo2801

1

2) 5х+3у+1=0

3у=-1-5х

у=(-1-5х)/3

4) 6х-12у+19=0

6х+19=12у

у=(6х+19)/12

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