162:y=3 y= 3⋅ a-7=20 a= 540:(17-x)=60 x= (700:a+20)-60=100 a=
Задание

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162:y=3
y= [ ]
3⋅ a-7=20
a= [ ]
540:(17-x)=60
x= [ ]
(700:a+20)-60=100
a= [ ]