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13(x - 2y)+x(7-2y)= 2y (1-x),
4(x-y-1)+5(x+y-1)= 32.
x=7/5 y
4(x-y-1)+5(x+y-1)=32
4(7/5y-y-1)+5(7/5y+y-1)=32
y=205/68
x=7/5*205?68
x=286/68
(x,y)=(287/68, 205/68)
Объяснение:
