Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
William solved the system of equations below. What mistake did he make in his work?
3x + y = 6
x − 2y = 2
y = 6 + 3x
x − 2(6 + 3x) = 2
x − 12 − 6x = 2
−5x − 12 = 2
+ 12 +12
x = 2.8
3(2.8) + y = 6
8.4 + y = 6
−8.4 −8.4
y = −2.4
He should have substituted 6 − 3x.
He combined like terms incorrectly. It should have been 5x instead of −5x.
He made a mistake in distributing −2.
He made no mistake.
 one year ago
 one year ago
William solved the system of equations below. What mistake did he make in his work? 3x + y = 6 x − 2y = 2 y = 6 + 3x x − 2(6 + 3x) = 2 x − 12 − 6x = 2 −5x − 12 = 2 + 12 +12 x = 2.8 3(2.8) + y = 6 8.4 + y = 6 −8.4 −8.4 y = −2.4 He should have substituted 6 − 3x. He combined like terms incorrectly. It should have been 5x instead of −5x. He made a mistake in distributing −2. He made no mistake.
 one year ago
 one year ago

This Question is Closed

LolWolfBest ResponseYou've already chosen the best response.0
\[3x+y=6\]Implies\[y=63x\]Not\[y=6+3x\]Choose your answer, accordingly.
 one year ago
See more questions >>>
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.