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em2005
@em2005
July 2022
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решите уравнения а)2х+4-(х-1)=9 б) (х+7)-(7х-9)=28
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Evgenia4836
Verified answer
2x+4-x+1=9
x=9-4-1
x=4
x+7-7x+9=28
-6x=28-9-7
-6x=12
x=-2
3 votes
Thanks 1
em2005
спасибо
ПрофиЗнания
A) 2x+4-x+1=9
x=9-5
x=4
b)
x+7-7x+9=28
-6x=28-16
-6x=12
x=12/-6
x=-2
1 votes
Thanks 2
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Answers & Comments
Verified answer
2x+4-x+1=9x=9-4-1
x=4
x+7-7x+9=28
-6x=28-9-7
-6x=12
x=-2
x=9-5
x=4
b)
x+7-7x+9=28
-6x=28-16
-6x=12
x=12/-6
x=-2