Two fellow students, Theo and Paula, have added two rational expressions. They ended up at different answers so they have asked you to check their work. Please explain to them any errors that you find.

Theo Paula
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Question

Two fellow students, Theo and Paula, have added two rational expressions. They ended up at different answers so they have asked you to check their work. Please explain to them any errors that you find.

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anonymous · Answer

this is the table

anonymous · Answer

attachment

anonymous · Answer

@ganeshie8 @dumbcow @hartnn

dumbcow · Answer

both are wrong
--> Theo , Line 3 , first numerator should remain as "2x+5"

--> Paula , Line 5, second fraction should not be flipped

anonymous · Answer

ok so that is where they made their errors?

anonymous · Answer

Wally knows that in order to add or subtract rational expressions, he has to find the least common denominator first. Unfortunately, he can not remember how to do that. Using complete sentences, explain to Wally how to find least common denominators. Make sure you clearly explain any important items to consider.
 @dumbcow

anonymous · Answer

anyone please?

ams98 · Answer

@PeterPan  Can you help me with the second part of this question after you're done helping aric :) because I know the first!