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Tony submitted his quiz on combining like terms and re-
ceived a failing grade. Examine the work he submitted for
the following problem.
3x +9y+2z-4x+y
3x + 4x +9y-y + 2z
7x+9+2z
Answer the following questions:
1. If the problem Tony submitted is worth 5 points, what score
would you give him and why?
2. Fix Tony's work. Be sure to show all the steps you took to
get your final answer.
Answer using complete sentences.


Sagot :