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Ангелина22325
@Ангелина22325
July 2022
2
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РЕШИТЕ УРАВНЕНИЕ
8x+2=-2x-7
-6x+3x-12=6x+15-18
ПОЖАЛУЙСТА!!!!!!!!!!!!!!
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Answers & Comments
Anastasiayall
8x+2=-2x+7
8x+2x=7-2
10x=5
x=0,5
-6x+3x-12=6x+15-18
-6x+6x+3x=15-18+12
3x=9
x=3
0 votes
Thanks 1
helena312
8х+2=-2х-7
8х+2х=-7-2
10х=-9
х=-9:10
х=-0,9
Проверка
8*(-0,9)+2=-2*(-0,9)-7
-7,2+2=1,8-7
-5,2=-5,2
-6х+3х-12=6х+15-18
-6х+3х-6х=15-18+12
-9х=9
х=9:(-9)
х=-1
проверка
-6*(-1)+3*(-1)-12=6*(-1)+15-18
6-3-12=-6+15-18
-9=-9
0 votes
Thanks 0
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Answers & Comments
8x+2x=7-2
10x=5
x=0,5
-6x+3x-12=6x+15-18
-6x+6x+3x=15-18+12
3x=9
x=3
8х+2х=-7-2
10х=-9
х=-9:10
х=-0,9
Проверка
8*(-0,9)+2=-2*(-0,9)-7
-7,2+2=1,8-7
-5,2=-5,2
-6х+3х-12=6х+15-18
-6х+3х-6х=15-18+12
-9х=9
х=9:(-9)
х=-1
проверка
-6*(-1)+3*(-1)-12=6*(-1)+15-18
6-3-12=-6+15-18
-9=-9