4)
x+x+3y-3y=17+5
2x=22
x=22:2
x=11
11+3y=17
3y=17-11
3y=6
y=6:3
y=2
Ответ: (11;2)
5) Г
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4)
x+x+3y-3y=17+5
2x=22
x=22:2
x=11
11+3y=17
3y=17-11
3y=6
y=6:3
y=2
Ответ: (11;2)
5) Г