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qwedfs
@qwedfs
August 2022
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Решить систему уравнений методом подстановки
x+y=2
2x-y=3
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proomvet
X=3:2=1,5
1,5+y=2
y=0,5
0 votes
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icekubik1309
x=3:2=1,5
1,5+y=2
y=0,5
olga007ko
X=2-y
2x-y=3
2(2-y)-y=3
y=1/3
2x-1/3=3
x=5/3
(x,y)=(5/3,1/3)
5/3+1/3=2
2×5/3-1/3=3
2=2
3=3
(x,y)=(5/3,1/3)
0 votes
Thanks 0
qwedfs
можно узнать, что означает ( / ) ???
olga007ko
дробь
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Answers & Comments
1,5+y=2
y=0,5
1,5+y=2
y=0,5
2x-y=3
2(2-y)-y=3
y=1/3
2x-1/3=3
x=5/3
(x,y)=(5/3,1/3)
5/3+1/3=2
2×5/3-1/3=3
2=2
3=3
(x,y)=(5/3,1/3)