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Chapter 21

"Laura, come on. It's not that hard," said Arnaldo, trying to be encouraging.

"But-I just don't get it! I did the thing, then the other thing, but I still don't get it! What now?! This makes no sense!" she exclaimed, putting her fists to her face and groaning.

"It makes perfect sense," said Arnaldo leaning over Laura's shoulder.

"You just have to put all the like terms together. See, here you have 3xy, 4x and 5xy. So what do you do there?"

Laura looked at numbers in her notebook that Arnaldo pointed out. They were currently in his room with Laura sitting at his desk and studying math while Arnaldo helped her out.

"Um-combine-the 3 and 5?"

"Correct! You take the 3xy and see if it's minus or plus the 5xy. It's plus, so you end up with 4x plus 8xy."

"Oh. That's it?" said Laura blinking.

"Pretty much. There are going to be harder problems, obviously, but this is the basic gist of it," said the Italian as he blew a puff of smoke.