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gumbet

Ответ:

Пошаговое объяснение:

1) 1 13:х=12:2 25

43:х=12: 125

43*125=12х

12х=165

х=165*2

х=325

х=6 25

2) х1,2=0,324

24х=1,2*0,3

24х=0,36

х=0,36:24

х=0,015

3) 4,6х+8=12

4,6*2=х+8

9,2=х+8

х=9,2-8

х=1,2

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