19x-91y=201, y=(19x-201)/91
91x-19y=129
91x-19(19x-201)/91=129
91x-(361x+3819)/91=129
91x-201=(361x+3819)/91
91(91x-201)=361x+3819
8281x-18291=361x+3819
8281x-361x=18291+3819
7920x=22182
x=22182/7920=2,80
y=(19x-201)/91
y=(19×2,8-201)/91
y=(53,2-200)/91
y=-146,8/91
y=-1,61
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