SOLUTION: Cynthia and Julian have practiced solving inequalities, one of them made a mistake. find out which one made a mistake, and explain where the mistake was made. Cynthia

Algebra ->  Inequalities -> SOLUTION: Cynthia and Julian have practiced solving inequalities, one of them made a mistake. find out which one made a mistake, and explain where the mistake was made. Cynthia       Log On


   

Question 1171523: Cynthia and Julian have practiced solving inequalities, one of them made a mistake. find out which one made a mistake, and explain where the mistake was made.
Cynthia Julian
n n
_ - 11 > -20 _ + 16 < 15
5 13

n n
_ > -31 _ < -1
5 13
n > -155 n < -13
Answer by greenestamps(13203) About Me  (Show Source):
You can put this solution on YOUR website!


Cynthia's work is incorrect. When she added 11 to each side of the original inequality, she did the computation on the right incorrectly.