The following is Andre’s solution to the inequality:

Line

Andre’s Work

1

2/3-x+1/12>=x-6/6

2

2/3(4/4)-x+1/12>=x-6/6(2/2)

3

8/12-x+1/12>=2x-12/12

4

8-(x+1) >=2x-12





5

8-x+1 >=2x-12

6

9-x >=2x-12

7

9-3x>= -12

8

-3x >=-21

9

x>= 7


Andre made two mathematical errors. Identify where the errors occurred and explain why they are incorrect.