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anastasiazhukova03
@anastasiazhukova03
July 2022
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Розв'яжіть рівняння:
1) 5(х + 3) – 7 = 2(х – 2)
2) |x + 1| = 3 – x
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Answers & Comments
nurMaratzh
1) 5(х+3) -7= 2(х-2)
5х+15-7= 2х-4
5х+8= 2х -4
5х- 2х= -4 -8
3х= 12
Х=4
—————————
2)| х+1|= 3-х
|х+1| -х= 3
х+1 +х =3, х+1 >= 0
-(х +1)+х=3, х+1<0
х=1, х>=-1
х=1
___________
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Answers & Comments
5х+15-7= 2х-4
5х+8= 2х -4
5х- 2х= -4 -8
3х= 12
Х=4
—————————
2)| х+1|= 3-х
|х+1| -х= 3
х+1 +х =3, х+1 >= 0
-(х +1)+х=3, х+1<0
х=1, х>=-1
х=1
___________