please help
santiago simplified the expression shown below. He got an answer of -573 when he should have gotten an answer of 197. Where did Santiago go wrong?

Question

please help 
santiago simplified the expression shown below. He got an answer of -573 when he should have gotten an answer of 197. Where did Santiago go wrong?

joannablackwelder · Answer

What is the expression?

anonymous · Answer

expression....?

anonymous · Answer

where is "the expression shown below"?

anonymous · Answer

Haha, sometimes expression is ambiguous :D It was hidden to challenge us ^_^ :))

anonymous · Answer

Santiago didn't show his work so it is impossible to find his mistake...

anonymous · Answer

@ehuman you made me laugh :D

anonymous · Answer

@coolpowerpuff if you want help, you'll need to attach the full question

joannablackwelder · Answer

Santiago's mistake was that he did not show his work. ;)