A community for students.
Here's the question you clicked on:
 0 viewing
Destinyyyy
 one year ago
Can someone tell me what I did wrong?
If possible, solve the system of equations. Use any method.
Destinyyyy
 one year ago
Can someone tell me what I did wrong? If possible, solve the system of equations. Use any method.

This Question is Closed

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.03x+5y=6 (1) 5x+7y=6 (2) 5(3x+5y=6) 15x25y=30 3(5x+7y=6) 15x+21y=30 4y=0 y=0

pooja195
 one year ago
Best ResponseYou've already chosen the best response.23(5x+7y=6) 15x+21y=30

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2Theres something wrong with that.Keep in mind OPPOSITES CANCEL.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.215+15= 30 we want to cancel the x value

pooja195
 one year ago
Best ResponseYou've already chosen the best response.25(3x+5y=6) 15x25y=30 same here 15+15=30

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.015x25y=30 15x+21y=30 4y=0

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0I have no clue what you doing. I am doing substitution method. The x is not suppose to just disappear like you have.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.25(3x+5y=6)<wrong 15x25y=30 5(3x+5y=6) 15+25y=30 15+25y=30 15x25y=30

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the mistake is in the second eq: \[3(5x+7y=6)\] you get: \[15x+21y=18\] because 3*6=18, not 30 !!

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2They made a mistake on both.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2There shouldnt even be 2 sets of equations

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2@Destinyyyy 15+25y=30 15x25y=30 solve this

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0@Greg_D I see that now thank you.. Cannot believe I did that .

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2Im gonna let them finish up.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2But there should not be 2 sets.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it was a system of 2 eqs from the begining of the problem... the only mistake i can see is the one i pointed out earlier 3*6 is not 30

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0I have no clue what your talking about @pooja195

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0I know the final answer is (3,3) ... But im not sure how they get 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 there are a lot of ways to solve the system, the one @Destinyyyy is using is fine, there was just that little mistake

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0once you get y=3, just replace that in any of the original equations...

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Im only allowed to use elimination, graph, substitution.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you arent allow to use "any" method

pooja195
 one year ago
Best ResponseYou've already chosen the best response.25 (3x+5y=6) 3(5x+7y=6 ) 15x25y=30 15x+21y=18 4y=12 divde both sides by 4 y=3 15x+21(3)=18 15x+63=18 subtract 63 both sides 15x=45 divde both sides by 15 x=3

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Its any method of the three. I should of said that

pooja195
 one year ago
Best ResponseYou've already chosen the best response.2notice how there is not 2 sets of equations in no way shape or for should u have 2 sets of equations even when doing elimination

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0Um the 3 is suppose to go into one of the original equation.

Destinyyyy
 one year ago
Best ResponseYou've already chosen the best response.0I know how to solve it. I just didnt see where I messed up. @Greg_D showed me my mistake.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0look if: \[y=3\] and: \[3x+5y=6\] then: \[3x+15=6\] you can get x from there...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the same is done in the last part of @pooja195 last response :)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.