Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

    
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,435 questions

17,804 answers

1,438 comments

98,163 users

Math HW help? Please Explain how its done?

0 votes
I was sick today so I didn't get to be taught this lesson so please help?

Solve the system of equations:

5x-4y=25
3x-4y=15
asked Nov 4, 2013 in ALGEBRA 1 by angel12 Scholar
edited Nov 4, 2013 by goushi

1 Answer

0 votes

Solve the system of equations

Eliminate tha caraible y by subtracting the equations 2 from 1

5x-4y = 25

3x-4y = 15

------------------

2x = 10

Divide each side by 2.

x = 5

Substitute x = 5 in 5x-4y = 25 and find the value of y.

5 * 5 - 4y = 25

25 - 4y = 25

subtract 25 from each side.

-4y = 0

y = 0

(x , y) = (5, 0).

answered Nov 4, 2013 by steve Scholar

Related questions

...