Розв’яжіть систему рі , надо {5y-x=53,@2y+3x=45
hyrshkananastasiya
2
08.06.2019 04:10
1
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2
5y-x=53]*3
2y+3x=45
15y-3x=159+
2y+3x=45+
17y=204
y=12
2*12+3x=45
24 +3x=45
3x=45-24
3x=21
x=21\3
x=7
y=12