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Sterety
@Sterety
July 2022
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Решите уравнения
(2-с)+3(с-3)=-13. -3(1-3в)-12=12. -2х-4=2х+8
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ChupaChups2013
1)
(2-с)+3(с-3)=-13
2-с+3с-9=-13
2с=-13-2+9
2с=-2
с=-1
2)
-3(1-3в)-12=12
-3+9в-12=12
9в=12+12+3
9в=27
в=3
3)
-2х-4=2х+8
-2х-2х=8+4
-4х=12
х=-3
1 votes
Thanks 1
irina199805092011
2-с+3с-9=-13
2с=-13+9-2
2с=-6
с=-3
-3+9в-12=12
9в=12+12+3
9в=27
в=3
-2х-4=2х+8
-2х-2х=8+4
-4х=12
х=-3
0 votes
Thanks 0
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Answers & Comments
2-с+3с-9=-13
2с=-13-2+9
2с=-2
с=-1
2)-3(1-3в)-12=12
-3+9в-12=12
9в=12+12+3
9в=27
в=3
3)-2х-4=2х+8
-2х-2х=8+4
-4х=12
х=-3
2с=-13+9-2
2с=-6
с=-3
-3+9в-12=12
9в=12+12+3
9в=27
в=3
-2х-4=2х+8
-2х-2х=8+4
-4х=12
х=-3