A community for students.
Here's the question you clicked on:
 0 viewing
 2 years ago
Trevor solved the system of equations below. What mistake did he make in his work?
2x + y = 5
x  2y = 10
y = 5  2x
x  2(5  2x) = 10
x  10 + 4x = 10
5x  10 = 10
5x = 0
x = 0
2(0) + y = 5
y = 5
Answer
He made no mistake
He combined like terms incorrectly, it should have been 4x instead of 5x
He should have substituted 5 + 2x
He subtracted 10 from the right side instead of adding 10 to the right side
 2 years ago
Trevor solved the system of equations below. What mistake did he make in his work? 2x + y = 5 x  2y = 10 y = 5  2x x  2(5  2x) = 10 x  10 + 4x = 10 5x  10 = 10 5x = 0 x = 0 2(0) + y = 5 y = 5 Answer He made no mistake He combined like terms incorrectly, it should have been 4x instead of 5x He should have substituted 5 + 2x He subtracted 10 from the right side instead of adding 10 to the right side

This Question is Closed

onceandforall
 2 years ago
Best ResponseYou've already chosen the best response.1He subtracted 10 from the right side instead of adding 10 to the right side
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.