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| x+6=y+1/10y
x - 1 = 10x(3 + y)
10y(x + 6) = y + 1
x - 1 = 30x + 10xy
10xy + 60y = y + 1
x - 30x - 10xy = 1
10xy + 60y - y = 1
- 29x - 10xy = 1
10xy + 59y = 1
z pierwszego -10xy = 1 + 29x czyli 10xy = -29x - 1
wstawiamy do drugiego
-29x - 1 + 59y = 1
-29x + 59y = 2
z drugiego 10xy = 1 - 59y
wstawiamy do pierwszego
-29x - 1 + 59y = 1
-29x + 59 = 2
mamy równania
-29x + 59y = 2
-29x + 59y = 2
dalej nie wiem jak to ugryźć