Which expression can you substitute for x in 5x+y=8 to solve the system below? 5x+y=8 x+4y=2

QAmmunity.org

My account
Edit my Profile
Private messages
My favorites

Ask a Question
Questions
Tags
Categories
Ask a Question

Edouard asked Oct 13, 2022

266,452 views

34 votes

Which expression can you substitute for x in 5x+y=8 to solve the system below?

5x+y=8
x+4y=2

Which expression can you substitute for x in 5x+y=8 to solve the system below? 5x-example-1

Mathematics
college

Edouard asked Oct 13, 2022

by Edouard

3.0k points

0 Comments

Your comment on this question:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Your answer

Email me at this address if my answer is selected or commented on:Email me if my answer is selected or commented on

Privacy: Your email address will only be used for sending these notifications.

1 Answer

23 votes

Answer:

x =30/19 and y =2/19

Explanation:

5x + y = 8

x + 4y = 2

then

5x + y = 8

-5(x +4y =2)

5x + y = 8

-5x - 20y = - 10

0 +y - 20y = -2

- 19y = -2

y = 2/19 then

5x + 2/19 = 8

5x = 152-2/19

5x/5 =150/19 *1/5

x =30/19

RBRi answered Oct 18, 2022

by RBRi

3.2k points

0 Comments

Your comment on this answer:

Email me at this address if a comment is added after mine:Email me if a comment is added after mine

Privacy: Your email address will only be used for sending these notifications.

Ask a Question

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

0 Comments

Your comment on this question:

Your answer

1 Answer

0 Comments

Your comment on this answer:

Other Questions