3(x - 1) - 2[x - (2x + 7)]
Remove the first innermost parentheses which is 3(x - 1),
so rewrite it as 3x - 3
3x - 3 - 2[x - (2x + 7)]
Remove the innermost parentheses which is -(2x + 7),
so rewrite it as -2x - 7
3x - 3 - 2[x - 2x - 7]
Next, inside the bracket, combine x - 2x as -x
3x - 3 - 2[-x - 7]
Remove the bracket of -2[-x - 7] as +2x + 14
3x - 3 + 2x + 14
Swap the two middle terms:
3x + 2x - 3 + 14
5x + 11
Edwin
