



 
Michelle, There is a slip in line 4. You have x+4x+x+4x=180 but it should be x+4x+x+4x45=180. You do however have it correctly on the next line
Your error is in line 6. To solve the above equation you need to add 45 to each side to obtain
so
Can you finish it now? Be sure to check your answer. Penny  


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