My problem in my hw says “Solve each system by the addition method”the problem is: 3x+2y=12 2x+5y=8 . How can I solve this with addition, I can solve this using multiplication but not adding, so is the paper just wrong?
Hi Jason, with this problem it appears that the only option is to use multiplication first. Afterward, you can use addition or subtraction, but if the directions imply that you can solve it without multiplication, that is incorrect.
The goal is to eliminate a variable, so if the numbers with that variable have the same sign, you subtract, the equations, and if they have opposite signs (positive and negative), you would add the equations.
Hello Sir,look now i understood your explanation very well better than my teacher but,i have got 2 questions for you 1)from where did you get the (9)????? 2)i can replace the X with one of the equation so its ok with the second on right?because i tried it and i got a diferent answer!!??
No cap this guy explained this better than my algebra teacher...
Same
Same
Thank you I really felt that I didn't belong in my algebra class but now I realized it was all my stupid ass teachers fault for teaching to fast
thank you. thank you. thank you. THANK YOU!!! i have my final on friday and you have SAVED ME
Thank you so much I was having so much trouble till I watched this
you helped me out on an situation that I had trouble understanding. Thanks a lot.
Awesome! Thanks for sharing that :)
thank you so much, you are appreciated!!!!
Thanks, I have a quiz coming up so this was great 😊
My problem in my hw says “Solve each system by the addition method”the problem is:
3x+2y=12
2x+5y=8 . How can I solve this with addition, I can solve this using multiplication but not adding, so is the paper just wrong?
Hi Jason, with this problem it appears that the only option is to use multiplication first. Afterward, you can use addition or subtraction, but if the directions imply that you can solve it without multiplication, that is incorrect.
How can i know when add and when to subtract the equation
The goal is to eliminate a variable, so if the numbers with that variable have the same sign, you subtract, the equations, and if they have opposite signs (positive and negative), you would add the equations.
Can you do a video explaining this x-y=1
X+y=3
Hello Sir,look now i understood your explanation very well better than my teacher but,i have got 2 questions for you
1)from where did you get the (9)?????
2)i can replace the X with one of the equation so its ok with the second on right?because i tried it and i got a diferent answer!!??
Moni Abboud Number 9 from the first equation?
ShirtyScarab554 In replacing the x with 3, 3x becomes 3 times 3 or 9. is that the 9 you are referring to? also yes you can use the second equation.
ShirtyScarab554 2(3) +5y =31 so 6 + 5y = 31. subtract 6 and you get 5y = 25 so after dividing by 5 we still get 3 for x and 5 for y
THANK YOU THIS HELPED ME ALOT
Thanks, Anahi!! :)
Yes definitely got a 100 now lol thanks 👍
Math is fire tho
How did 18 ÷ in to -10
thank you so much, you are appreciated!!!!
Thank you, Emilie! That means a lot :)