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leralerok04lerok04
@leralerok04lerok04
July 2022
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3(3-2х)+27=2(3+2х)
3х+2,7=9(х-1,1)
0,2(5х-2)=0,3(2х-1)-0,9
срочно пжл!!! даю 15 баллов!!!
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Енори
1) 9 - 6x +27 = 6 + 4x
- 6x - 4 x = 6 - 9 - 27
- 10x = - 30
x = 3
2) 3x + 2,7 = 9x - 9,9
3x - 9x = - 9,9 - 2, 7
- 6x = 7, 2
x = - 1, 2
3) x - 0, 4 = 0,6x - 0, 3 - 0,9
x - 0,6x = - 0,3 - 0,9 + 0,4
-0,4x = - 0, 8
x = 2
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Nymeria
2) -9.9-2.7=-7.2, а не 7.2
Nymeria
3)1х-0.6х=0.4х, а не -0.4х
Енори
Ой...
Енори
- 6x = - 12,6
Енори
x = 2, 1
Nymeria
1. 3(3-2х)+27=2(3+2х)
9-6х+27=6+4х
4х+6х=9-6+27
10х=30
х=3
2. 3х+2.7=9(х-1.1)
3х-2.7=9х-9.9
9х-3х=9.9-2.7
6х=7.2
х=1.2
3. 0.2(5х-2)=0.3(2х-1)-0.9
х-0.4=0.6х-0.3-0.9
х-0.6х=0.4-0.3-0.9
0.4х=-0.8
х=-2
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Report "3(3-2х)+27=2(3+2х) 3х+2,7=9(х-1,1) 0,2(5х-2)=0,3(2х-1)-0,9 срочно пжл!!! даю 15 ..."
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Answers & Comments
- 6x - 4 x = 6 - 9 - 27
- 10x = - 30
x = 3
2) 3x + 2,7 = 9x - 9,9
3x - 9x = - 9,9 - 2, 7
- 6x = 7, 2
x = - 1, 2
3) x - 0, 4 = 0,6x - 0, 3 - 0,9
x - 0,6x = - 0,3 - 0,9 + 0,4
-0,4x = - 0, 8
x = 2
9-6х+27=6+4х
4х+6х=9-6+27
10х=30
х=3
2. 3х+2.7=9(х-1.1)
3х-2.7=9х-9.9
9х-3х=9.9-2.7
6х=7.2
х=1.2
3. 0.2(5х-2)=0.3(2х-1)-0.9
х-0.4=0.6х-0.3-0.9
х-0.6х=0.4-0.3-0.9
0.4х=-0.8
х=-2