Предмет: Математика, автор: irochka110907

9х-7=6х+14
0,6-1,6(х-4)=3(7-0,4х)
3(х+6)=х+2(9+х)

Ответы

Автор ответа: veronika0446
1

1. 9х-7=6х+14

9х-6х=14+7

3х=21

х=7

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