13-9х=12,5+х. !!!!!!!!!! Ть

Question

13-9х=12,5+х. !!!!!!!!!! Ть

Answer 1

-9х-х=12.5-13

-10х=0.5

х=-0.05

Answer 2

13-9х=12.5+х
- 9х-х=12.5-13
- 10х= - 0.5
х=  -0.5/( - 10)
х=0.05