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4 x - 9=2x +11
4x-9=2x+11
6x+9=2x+33
5x+6=7x-10
11x-50=x
2x=9x-21
Номер 590
4 x - 9=2x +11
4x-9=2x+11
6x+9=2x+33
5x+6=7x-10
11x-50=x
2x=9x-21
Номер 590
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Answers & Comments
х-3х=-4-2
-2х=-6
х=3
2)4х-9=2х-11
4х-2х=-11+9
2х=-3
х=-1,5
3)6х+9=2х+33
6х-2х=33-9
4х=24
х=6
4)5х+6=7х-10
5х-7х=-10-6
-2х=-16
х=8
5)11х-50=х
11х-х=50
10х=50
х=5
6)2х=9х-21
2х-9х=-21
-7х=-21
х=3
4х - 2х=9+11 6х - 2х= - 9+33 6+10= - 5х +7х 11х -х=50
2х=20 4х=24 16=2х 10х=50
х=20 : 2 х=24 : 4 х=16 : 2 х=50 : 10
х=10 х=6 х=8 х=5
2x=9x-21
21=9х - 2х
21=7х
х=21 : 7
х=3