120*х=240

120*х=80*3

 60*х=240:2

 х*2=240*2

400:у=8

 (500-100):у=8

400:у=320-302

z:7=80

 z:7=40*2

 

помогите решить уравнения)))

 

ЗаРанее СпасибО )))*

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