Question

9+2(2х+1)=1
помогите решить

Answer 1

9+4х+2=1
4х=1-9-2
4х= -10
х= -10:4
х= -2,5

Answer 2

9+2(2х+1)=1
9+4х+2=1
4х= 1-2-9
4х=-10
х = -10 : 4
х= - 2.5