A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
Solve using the elimination method...
11x + 10y = 147
0x + 2y = 14
anonymous
 3 years ago
Solve using the elimination method... 11x + 10y = 147 0x + 2y = 14

This Question is Closed

araffi
 3 years ago
Best ResponseYou've already chosen the best response.0\[11x+10y=147\] \[0x+2y=14\] What you want to look for is a way to make the coefficients of either x or y the same (in absolute value). That way when you add or subtract the two equations, you will get a coefficient of 0 for that variable, which will allow you to solve for the other variable. The best way to do start is to find a variable where the coefficient in one equation is the multiple of another. In this case, 2> one of the coefficients of y, multiplied by 5 = 10, the other coefficient of y. In order to keep the second equation true, you need to multiply both sides of the equation by 5. So the second equation becomes \[0x*5+2y*5=14*5\] OR \[0x+10y=70\] Subtracting the second equation from the first, you get 11x+0y=77 solving for x, x=77/11, so x=7, and plugging back into the original equation (or really just solving the second equation for y), you find that y is 7 also. [Hmmm, bizarre, is anyone else getting this answer?]
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.