Ask
your own question, for FREE!

Mathematics

OpenStudy (anonymous):

Solve the system by substitution: 2x-y=5 -2x+y=7

7 years ago
OpenStudy (anonymous):

from the first equation we get 2x = y+5 substitute that in the second equation to get -(y+5)+y =7 solve for y and plug it back in one of the original equations to find the value of x

7 years ago
OpenStudy (anonymous):

Can you help with please??

7 years ago
OpenStudy (anonymous):

with what?

7 years ago
OpenStudy (anonymous):

Solving

7 years ago
OpenStudy (anonymous):

there is no solution to this.

7 years ago
OpenStudy (anonymous):

OK thanks

7 years ago
OpenStudy (anonymous):

you are welcome

7 years ago
OpenStudy (anonymous):

you get -5 = 7 which is silly, hence this system of equations doesnt have a solution. notice that the slopes of the two lines are the same. this means they are parallel. this means they have no point of intersection and hence no solution

7 years ago
OpenStudy (anonymous):

Thank you''

7 years ago
Can't find your answer?
Make a FREE account and ask your own question, OR you can help others and earn volunteer hours!

Latest Questions

mejiamtz:
How does Langston Hughes use the denotative meaning of the word uniform ironically in his poem "Will V-Day Be Me Day Too"? A.

6 minutes ago
0 Replies
0 Medals

mejiamtz:
How does Langston Hughes use the denotative meaning of the word uniform ironicall

10 minutes ago
0 Replies
0 Medals

bammbiii5:
The equation of the linear regression line represents the relationship between the number of minutes a person can run, x, and the number of laps a person ca

1 hour ago
1 Reply
0 Medals

Janhsey:
Which student wrote the correct expression? Tanya Wyatt Xavier Yang

2 hours ago
0 Replies
0 Medals

AllisonKookie:
An architect drew the blueprint for a new office building. He used a scale in which 1 inch represents 7.

7 hours ago
0 Replies
0 Medals

AllisonKookie:
Samuel's Middle School had a Week of Giving charity drive. The table below shows the number of participants per day.

8 hours ago
4 Replies
1 Medal

dacoya5:
High erosion rates in Madagascar are caused primarily by __________.

8 hours ago
1 Reply
0 Medals

Ferredoxin:
Need help on some Adobe Dreamweaver questions: 1. What major tools does Dreamweaver automatically incorporate? 2.

1 hour ago
3 Replies
0 Medals

AllisonKookie:
A shirt originally cost $47.47, but it is on sale for $35.60. What is the percentage decrease of the price of the shirt? If necessary, round to the nearest

9 hours ago
2 Replies
0 Medals