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irka424
@irka424
July 2022
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помогите!!! вот фото
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Anastasia97s
A)5x+3x-3-6x-11=02x-14=0|:2X-7=0X=7
1 votes
Thanks 1
madamnazarovs
А)5х+3(х-1)=6х+11
5х+3х-3=6х+11
5х+3х-6х=11+3
2х=14
х=14:2
х=7
Проверка
5*7+3(7-1)=6*7+11
35+18=42+11
53=53
в)8(у-7)-3(2у+9)=15
8у-56-6у-27=15
8у-6у=15+56+27
2у=98
у=98:2
у=49
Проверка
8(49-7)-3(2*49+9)=15
336-3*107=15
336-321=15
15=15
д) 6+ (2-4х)+5=3(1-3х)
6+2-4х+5=3-9х
6+2+5-3=-9х+4х
10=-5х
х=10:(-5)
х=-2
Проверка
6+(2-4*(-2))+5=3(1-3*(-2))
6+2+8+5=3*7
21=21
1 votes
Thanks 1
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Answers & Comments
5х+3х-3=6х+11
5х+3х-6х=11+3
2х=14
х=14:2
х=7
Проверка
5*7+3(7-1)=6*7+11
35+18=42+11
53=53
в)8(у-7)-3(2у+9)=15
8у-56-6у-27=15
8у-6у=15+56+27
2у=98
у=98:2
у=49
Проверка
8(49-7)-3(2*49+9)=15
336-3*107=15
336-321=15
15=15
д) 6+ (2-4х)+5=3(1-3х)
6+2-4х+5=3-9х
6+2+5-3=-9х+4х
10=-5х
х=10:(-5)
х=-2
Проверка
6+(2-4*(-2))+5=3(1-3*(-2))
6+2+8+5=3*7
21=21