Question

помогите пожалуйста с решением

Answer 1

9/х + 13/ 2х=2
9*2/х +13/2х=2/1
18/2х+13/2х=2/1
31/2х=2/1
2*2х=31
4х=31
Х=7,75

Answer 2

(72 - 5 - 4х)/6х = 0
(67 - 4х)/6х = 0
67 - 4х = 0. 6х = 0
4х = 67. х = 0
х = 16ц 3/4

17х + 26 -3/4х+3 = 0
17х + 23 = 0. 4х + 3 = 0
17х = 23. 4х = -3
х = 1ц 6/17. х = -3/4