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baumarina
@baumarina
August 2022
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Помогите пж....))
Найдите у, если уравнение 3х+5у=15 имеет решение:
1) (5; у)
2) (-5; х)
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Answers & Comments
dayana33333
1)3х+5у=15,
(5; у)
3*5+5y=15,
15+5y=15,
5y= 15-15
5y=0
y=0
2)
3х+5у=15,
(-5; х)
3x+5*(-5)=15,
3x-25=15
3x=15+25
3x= 40
x= 13,3
5 votes
Thanks 8
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Answers & Comments
3*5+5y=15,
15+5y=15,
5y= 15-15
5y=0
y=0
2) 3х+5у=15, (-5; х)
3x+5*(-5)=15,
3x-25=15
3x=15+25
3x= 40
x= 13,3