The following is a student solution to the inequality 724-x+18x-36:
(1) 724-x+18x-36
(2) 724-33x+1844x-36
(3) 724-3x+3244x-324
(4) 7-3x+34x-3
(5) 7-3x-34x-3
(6) 4-3x4x-3
(7) -7x-7
(8) x1
There are two mathematical errors in this work. Identify at what step each mathematical error occurred and explain why it is mathematically incorrect.
