7-2х=9-3х 11х=6+5(2х-1) 6(2х-3)-3х=2х-4 4(3х+5)-5(4х-3)=3 - вопрос №72931165216233244355433534172725633098448 от SherriBlendi 10.04.2020 11:17

Question

Алгебра: 7-2х=9-3х 11х=6+5(2х-1) 6(2х-3)-3х=2х-4 4(3х+5)-5(4х-3)=3 5х-3(4х-1)=7-2(7х+2) -5,6(х-3)+2,1х=-3,5х+10

SherriBlendi · Answer

7 - 2X = 9 - 3X
2X - 3X = 7 - 9
- X = - 2
X = 2

11X = 6 + 10X - 5
11X - 10X = 1
X = 1

12X - 18 - 3X = 2X - 4
9X - 2X = - 4 + 18
7X = 14
X = 2

12X + 20 - 20X + 15 = 3
- 8X = 3 - 35
- 8X = - 32
X = 4

5X - 12X + 3 = 7 - 14X - 4
- 7X + 14X = 3 - 3
7X = 0
X = 0

- 5,6X + 16,8 + 2,1X = - 3,5X + 10
- 3,5X + 3,5X = 10 - 16,8
0X = - 6,8
Нет решений