Помогите срочно!!
Реши систему уравнений:
⎧⎩⎨1x+y+1x−y=158x+y+10x−y=136


⎧⎩⎨⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪x=
y=
(Дробь в ответе должна быть сокращённой).
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