Number of solutions to linear equations | Linear equations | Algebra I | Khan Academy

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Equation Special Cases

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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These videos are for the people that dont pay attention in class, like me

danielnorona
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Thanks, I’m in an Advanced class and I was confused.

kazuhirokazi
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I like how you add color to make the vid interesting

jmccrimmon
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This guy explained it better than my teacher

grung
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He's the reason I'm graduating 8th grade

akage
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standard, free, best ! love khan academy.

HassaanRaza
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this saved my ass before progress reports

mmtgangsta
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Amazing sir. I am very thankful to you.

reenaprabhu
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I'm In 8th grade middle school and I'm looking at this my head is telling me I don't get it

sugma
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I have my math exam tomarow and I’m scared because my whole life I’ve been good at math and gotten pretty good grades in math but this year my grades were going to a C or a D

grapeleiva
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Our teacher put this on are test and said we should know how to do this and has never explained it

simplyrover
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So sixth grade now teaches seventh and eighth grade math this is god in disguise

corn
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him:explains it easily
also him: calls yellow green

brawlclips
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What is the method he used in the video to find out the number of solutions?

TurtleDuck
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why did you combine the 2x and -9x in the second equation first and not the 2x and -9x in the first equation?

chrisb
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This is one of the videos that may save me

blockyblocks
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CURSE ADVANCED CLASS AND GOD BLESS THIS MAN

valkoa
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How do you do it when the equation has a fraction like 7=n+14 over 2

legostar
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I get to test out of math 8 so I just have to learn all this in two days 😂😂😂

benleslie
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What equation would it be if you do 3x plus 5 equals 3x -5

thejj