multiply the bottom equation by (-2), then it will be -8x - 10y = -10. then, add both the equations, and you get -7x = 7. divide both sides by -7, and x = -1. then plug the x in either equation. let's do x + 10y = 3. plugging it in: -1 + 10y = 3. subtract -1 from 3, which is 2. next, it will be 10y = 2. divide both sides by 10, and you get y to equal 5. i suck at elimination, and explaining, but hopes this helps.
Hi John, In order to eliminate the x variable, both coefficients have to be the same. The only way to get a common multiple (6) is to multiply the equations by different numbers (2 and 3). This is very similar to finding a common denominator for fractions. I hope that helps!
![🎤 จับฉลากร้องเพลง x P’ #XXSIVK [EP.1] (2/2) เพื่อนจับได้คำไหน..ต้องร้องคำนั้น เริ่ม! 💓🎶 #MXFRUIT](http://i.ytimg.com/vi/1bJvMJXmeS4/mqdefault.jpg)
Out of all the videos explaining this, this is the only one that worked. Thanks.
Thanks a lot. You explained it so much better than my math teacher. Props
Thank you I had to come find a video bc I’m online and the teacher doesn’t care about online ppl :)
Thank you, thank you! This 45 year old mom just helped her 14 year old avoid a breakdown with YOUR helpful video!
Thank you so much
thanks dude, you save my ass on the exam
also how would you solve a equation that's setup as x + 10y = 3
4x + 5y = 5
multiply the bottom equation by (-2), then it will be -8x - 10y = -10. then, add both the equations, and you get -7x = 7. divide both sides by -7, and x = -1. then plug the x in either equation. let's do x + 10y = 3. plugging it in: -1 + 10y = 3. subtract -1 from 3, which is 2. next, it will be 10y = 2. divide both sides by 10, and you get y to equal 5. i suck at elimination, and explaining, but hopes this helps.
thanks sir it helped a lot!
thank you I missed a day in class (:
Thank you sir.
On the second wxample why did you multiply the other one by 3?
Hi John,
In order to eliminate the x variable, both coefficients have to be the same. The only way to get a common multiple (6) is to multiply the equations by different numbers (2 and 3). This is very similar to finding a common denominator for fractions. I hope that helps!
Thanks alot!!! Btw i have a test on this in a few days so thanks!
Jhon Smith glad to help :) good luck!
This really helps, so much better than my math teacher
wait a minute how did he get 14?
6 - (-8) the -(-) will become plus so 6+8 = 14
6-8 is 14?how?
-2
You diud it wrong..-8- us postive
No because positive and negative equal negative
@@adajayyy7692 I think the 14 is suppose to be negative..
@@zony409 yess
That’s why i was so confused because how does 6-8 give you 14?idk it doesn’t make any sense to me