Question

3[–x + (2 x + 1)] = x – 1

Answer 1

x = -2

Explanation:

`3[-x + (2 x + 1)] = x -1\\\\\mathrm{Expand\:}3\left(-x+\left(2x+1\right)\right):\quad 3x+3\\3x+3=x-1\\`

Collect like terms

`3x -x =-1-3`

Add similar elements

`2x = -4\\\\\mathrm{Divide\:both\:sides\:by\:}2\\(2x)/(2)=(-4)/(2)\\\\Simplify\\\\x = -2`