A community for students.
Here's the question you clicked on:
 0 viewing
anonymous551
 3 years ago
SIMPLE QUESTION: Solve. Do checks. Explain.
x + 4y = 2
x + y = 8
Systems Of Elimination/Addition
(I'm a visual learner)
anonymous551
 3 years ago
SIMPLE QUESTION: Solve. Do checks. Explain. x + 4y = 2 x + y = 8 Systems Of Elimination/Addition (I'm a visual learner)

This Question is Closed

mathmate
 3 years ago
Best ResponseYou've already chosen the best response.0Add the equations to eliminate x. Solve for y. Back substitute to solve for x. Hint for check: x*y = 12

texaschic101
 3 years ago
Best ResponseYou've already chosen the best response.1Here you go " visual learner " x + 4y = 2 x + y = 8 add 0 + 5y = 10 (as you can see, the x's canceled each other out) 5y = 10 (divide by 5 to get y by itself) 5y/5 = 10/5 y = 2 Now sub 2 in for y in either of the original equations x + 4y = 2 x + 4(2) = 2 x + 8 = 2 (subtract 8 from each side to get x by itself) x + 8  8 = 2  8 x =  6 check.....you can use any of the original equations. Now just sub 2 in for y and 6 in for x.  x + y = 8 (6) + 2 = 8 6 + 2 = 8 8 = 8 (correct) ANSWER : x = 6 and y = 2
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.