Solve for n. 8n-3=9n
2 answers:
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Some symbols are missing. I'm assuming you meant to put in a horseshoe symbol like so 
If so, then the contrapositive of that would be
which is the final answer.
The tilde sign
means "not" so writing 
means "not q" which is the complete opposite of q.
If so, then the contrapositive of that would be
The tilde sign