Решите уравнения:
1) 3х - 5 × ( 2х + 1 ) = 3 × ( 3 - 2х )
3х - 10х - 5 = 9 - 6х
- 7х - 5 = 9 - 6х
- 7х + 6х = 9 + 5
- х = 14
х = - 14
_________
3 × ( - 14 ) - 5 × ( 2 × ( - 14 ) + 1) = 3 × ( 3 - 2 × ( - 14 ))
93 = 93
Ответ: х = - 14
2) 4х\6 = х - 9\2
8х =5 ( х - 9 )
8х = 5х - 45
8х - 5х = - 45
3х = - 45
х = - 15
___________
4 × ( - 15 )\5 = - 15 - 9\2
- 12 = - 12
Ответ: х = - 15
Хы