What is wrong with this argument? Check all that apply.
Suppose x = 2
2x = 4
2x + 1 = 5
Nothing.
Punctuation is missing. Each sentence needs to be terminated with a period (.).
The logical glue is missing. Lines 2 is a consequence of line 1, and line 3 is a consequence of line 2. Words and phrases like "Thus", "Therefore", "It follows", etc. need to be used to make it clear that we are drawing conclusions.
The assumption that x is an integer was not stated. Line 1 should have been "Suppose x is an integer and x = 2".