In which step did Ernesto make the first error?

label Algebra
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Jun 24th, 2015

Thank you for the opportunity to help you with your question!

in step 3 in which Ernesto had to mutiply 3 with 7 and he didn't do it, so it should be like this;

x-y = 7

3x-2y = 8

Step 1: x= y+7

Step 2: 3(y+7)-2y = 8

Step 3: 3y+21-2y =8

Step 4: y = 8-21

Step 5: y = -13 (correct answer)

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 24th, 2015

Did you know? You can earn $20 for every friend you invite to Studypool!
Click here to
Refer a Friend
...
Jun 24th, 2015
...
Jun 24th, 2015
Jun 24th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer