Скачать или смотреть ratio and proportion, word problems (KristaKingMath)

► My Pre-Algebra course: https://www.kristakingmath.com/prealg...

In this video we learn how to apply what we've learned about proportion problems to a systems of linear equations problem. We'll use what we've been told in the word problem to write out two equations, we'll cross multiply to solve the proportion for one of the variables, and then we'll make a substitution into the other equation in order to isolate and solve for one variable.

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If you could use some extra help with your math class, then check out Krista’s website // http://www.kristakingmath.com

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Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)

Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”

So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student—from basic middle school classes to advanced college calculus—figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: http://www.kristakingmath.com

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