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.
"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?
18 answers
Thank you some much john!
nice post, john
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 .😉
YYYYYYYYOOOOOOOUUUUUUU SSSSSSSSUUUUUUUUCCCCCCCKKKKKKK
nnngftgt7yhffrtyu
Y'all Suck.
sorry but i dont get it but leave a like on the video and dont subcrib😓 but🍑
Really Madison why do you have to be so MEAN!!!!!!
Hi i am an 9 grader what is a number that have a sum of 15 and a difference of 7
i need the answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
NO HELP
i dont noooooooooooooooooooooooooooooo
ahhhhhhhh tell me what the awnswer is
I just need the answer (March 13 2021)
Shut the hell up pleas
Plzzzz give the answer
this is so hard to understand.
1 answer