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arduvanova
@arduvanova
August 2022
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решите уравнение а) -3x+10x=-15-6 б) 7x-5x=17-35 в) 5x-7x=-35+37 г) -2x-11x=-4
упростите выражения
а)2а-2(а-7) б)-6а+3(2-2а)
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owlj
А) -3х+10х=-15-6
7х=-21
х=(-21):7
х=-3
б) 7х-5х=17-35
2х=-18
х=(-18):2
х=-9
в)5х-7х=-35+37
-2х=2
х=2:(-2)
х=-1
г) -2х-11х=-4
-13х=-4
х=(-4):(-13)
х=
________________
а) 2а-2(а-7)=2а-2а+14=14
б) -6а+3(2-2а)=-6а+6-6а=-12а+6
4 votes
Thanks 8
inady2001
А)-3x+10x=-15-6
7x=-21
x=-3
b)7x-5x=17-35
2x=-18
x=-9
1 votes
Thanks 1
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Answers & Comments
7х=-21
х=(-21):7
х=-3
б) 7х-5х=17-35
2х=-18
х=(-18):2
х=-9
в)5х-7х=-35+37
-2х=2
х=2:(-2)
х=-1
г) -2х-11х=-4
-13х=-4
х=(-4):(-13)
х=
________________
а) 2а-2(а-7)=2а-2а+14=14
б) -6а+3(2-2а)=-6а+6-6а=-12а+6
7x=-21
x=-3
b)7x-5x=17-35
2x=-18
x=-9