How to Solve Simultaneous Equations in under 10 Seconds - Algebra Math Trick

Solve simultaneous equations much faster than using the elimination method or substitution.
In fact your teacher won't be able to solve them as fast!

So hahaha to them and more free time for you!

[ahyougotnojams]

OMG!!! I just can't thank you enough. Definitely the best math channel on yt which delivers authentic and practical tricks!

[cosmic_]

Thank you for sharing this! It’s a great video, has a clear description, is easy to follow work- throughs, and is a great strategy for time management! Keep it coming!

[infinity]

I would appreciate knowing why this works. What I mean is that there has to be some underlying structure to why this works. In other words, how did the person who came up with this solution do so?

[sparklingcutie]

This is very helpful. I would love to have a video with simultaneous equations but with decimals, fractions and parentheses, thankyou.

[GreenAppelPie]

That’s amazing, thanks!! And I don’t expect teachers to know everything but I’ve seen some doozies. The trick is not to point out things during class, but after.

[emmanuelmadagu]

Thanks for this trick. My Math teacher taught us simultaneous equations and while she was my favourite math teacher, her solution and method were just way too long for me to remember, you made this so easy for me thank you.

[julians]

Delighted to learn again. All I can guess is that only a few students who have more maths classes and maths electives may be privileged to learn this. We can forget the issue of" we missed out because we did not pay attention in class".

[doulatha]

This is great! My 11 year old picked right up on this and got both examples right! Thanks for sharing

[willthecat]

Also if your teacher doesn't know about determinants... and hence this math "trick" (Cauchy wrote about them circa 1800) your in grade 2, or you math teacher is really the gym teacher, hijacked by the principal, to teach O level math.

[angusc]

Like the lattice method for multiplying multiple digit pairs (e.g. 13*14), this technique works faster and easier for smaller digit values.

[j.robertsergertson]

Where were you in my 7th grade algebra class ? I've learned more easier ways to do math from your videos than Mrs Fitzpatrick entire class

[ElevenMorez]

This is based on matrices which are have 4 coefficients ---
[a b c d] now you, put the coefficients on the matrices and calculate determinant -- (a*d - b*c) = Det (A)
Now you put the expressions to left side [a c x y]
next determinant (a*x - c*y) = Det (B)
Next to right side [x c y d]
calculate (x*d - c*y) = Det (C)
And the last step is dived the determinants Det (A) / Det (B)
Det (A) / Det (C).

[smartside]

Very Good Teaching. SUPERB I understood

[markkiraly]

This is Cramer's rule and I can guarantee it's taught in at least one high school: mine.

[anastasiatanaseraphina]

Hahaha! I loved this trick of yours & I can’t wait to use it!

[editz]

Hello sir, I don't expect you to reply, but what do you do if the y and x positions are changed? as I've noticed that the x and y variables were below each other, what if it was switched? how would you solve it? pls tell

[chalokips]

This is so powerful time saving quick and smart method intergers is what is required for one to get this right ❤❤ awesome

[aletaschulz]

Thanks for the refresher. I forgot how to solve these.
It has been too long since the tenth grade.

[Sharpened_Spoon]

Cheers thats much easier than I remember in school!

[livehard]

Look up Cramer's rule. This is taught in senior high school in some countries.