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kayzer1996bk
@kayzer1996bk
July 2022
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1.Даны числа k и l. Каков знак их произведения?
kl(><)0
2. Выполните уравнения
А)(3х+1):(-1/4)=-4.
Б)р:(-7/26)=2 11/14.
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Verified answer
1) k>0, l>0 => kl>0
k>0, l<0 => kl<0
k<0, l>0 => kl<0
k<0, l<0 => kl>0
2) (3х+1):(-1/4)=-4 р:(-7/26)=2 11/14.
3x+1=-4 *(-1/4) p=2 11\14*-7\26)
3x+1=1 p=39\14 *(-7\26)
3x=1-1 p=-3\4
3x=0
x=0
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Answers & Comments
Verified answer
1) k>0, l>0 => kl>0k>0, l<0 => kl<0
k<0, l>0 => kl<0
k<0, l<0 => kl>0
2) (3х+1):(-1/4)=-4 р:(-7/26)=2 11/14.
3x+1=-4 *(-1/4) p=2 11\14*-7\26)
3x+1=1 p=39\14 *(-7\26)
3x=1-1 p=-3\4
3x=0
x=0