Помогите---++-+++++!!

Question

Помогите---++-+++++!!

---

Answer 1

5х+20=14х-7
-9х=-27
х=3

Answer 2

5(х+4)= 7(2х-1)
5х+20= 14х-7
20+7= 14х-5х
27= 9х
Х=27:9
Х=3