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a fost răspuns

2-×=5-2y x-y=2 x= y= ​

Răspuns :

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2–x=5–2y
2–5=x—2y
x—2y=—3
x—y= 2. => —x+2y=3
x—y=2.

2y—y= 5
y=5

x= —3+2y = —3+10 => x= 7