Asked by Kai
"Two numbers have a sum of 15 and a difference of 7. What are the two numbers?"
A word problem using system of equations and I'm pretty lost an help?
A word problem using system of equations and I'm pretty lost an help?
Answers
Answered by
John
The sum is 15 so... x + y = 15 and their difference is 7 so... x - y = 7
Your choices are substitution (where you re-arrange equation 1 for x or y... and sub it into equation 2). Or elimination where you add up equation 1 and 2, in elimination the y's zero out and you have 2x = 22, so divide by 2 and x = 11. Once you have x sub it back into either equation and solve for y.
Your choices are substitution (where you re-arrange equation 1 for x or y... and sub it into equation 2). Or elimination where you add up equation 1 and 2, in elimination the y's zero out and you have 2x = 22, so divide by 2 and x = 11. Once you have x sub it back into either equation and solve for y.
Answered by
Kai
Thank you some much john!
Answered by
bobpursley
nice post, john
Answered by
Levi
I’m in eighth grader so can you just tell me the answer so I will not be I’m not an eighth grader and a third grader sorry can you just tell us the two numbers excited doing like the entire equation
Because I’m on a math game and I really need to do this and I can’t figure out how to do it so I don’t know how to say this my name I can’t my math game is called Prodigy and I need help in the clothes are not very good and so can you just tell us what the answer is you don’t have to do the whole equation which I totally don’t get so OK .😉
Because I’m on a math game and I really need to do this and I can’t figure out how to do it so I don’t know how to say this my name I can’t my math game is called Prodigy and I need help in the clothes are not very good and so can you just tell us what the answer is you don’t have to do the whole equation which I totally don’t get so OK .😉
Answered by
Madison
YYYYYYYYOOOOOOOUUUUUUU SSSSSSSSUUUUUUUUCCCCCCCKKKKKKK
Answered by
hhhh
nnngftgt7yhffrtyu
Answered by
PeePee
Y'all Suck.
Answered by
isaac
sorry but i dont get it but leave a like on the video and dont subcrib😓 but🍑
Answered by
Allison Beltz
Really Madison why do you have to be so MEAN!!!!!!
Answered by
Madison
Hi i am an 9 grader what is a number that have a sum of 15 and a difference of 7
Answered by
Hayden
i need the answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answered by
shine
NO HELP
Answered by
Anonymous
i dont noooooooooooooooooooooooooooooo
Answered by
Anonymous
ahhhhhhhh tell me what the awnswer is
Answered by
Anonymous
I just need the answer (March 13 2021)
Answered by
MsCastillon
Shut the hell up pleas
Answered by
lalakid
Plzzzz give the answer
Answered by
juliet monger
this is so hard to understand.
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