Answer:
x=-2
Step-by-step explanation:
[tex]x=-2[/tex]
[tex]3[-x+(2x+1)]=x-1[/tex]
[tex]-3x+3(2x+1)]=x-1\\-3x+6x+3=x-1\\3x+3=x-1\\2x+4=x\\2x+4=0\\2x=-4\\x=-2[/tex]
