Ответ:
x²+y=7
2x-y=1
x²=7+y
2x=1+y
x²=7y
2x=1y
x²=7
x=1:2
x=0,5
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Ответ:
x²+y=7
2x-y=1
x²=7+y
2x=1+y
x²=7y
2x=1y
x²=7
x=1:2
x=0,5