What is the answer to this equation, 8x-5y=12, x=5-y ?

What is the answer to the following equation,?

8x-5y=12

  x=5-y
in Algebra 1 Answers by Level 1 User (200 points)

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

plug x = 5 - y in for x into the first equation

8(5 - y) - 5y = 12

then 40 - 8y - 5y = 12

40 - 13y = 12

-13y = -28

y = 28/13

then x = 5 - 28/13 so x = 37/13

answer (37/13, 28/13)
by Level 5 User (11.9k points)

Related questions

1 answer
minimize z=8x+5y , subject to 8x+y>=12,4x+2y>=8
asked Sep 17, 2013 in Other Math Topics by khushi | 2.3k views
2 answers
What's the answer to: 1/8x+3/5y-1?
asked Sep 26, 2012 in Algebra 1 Answers by anonymous | 518 views
0 answers
the answer to this equation: 3y^5 + 23y^5 + 5y^2 = ?
asked Nov 21, 2011 in Algebra 1 Answers by anonymous | 714 views
1 answer
5y-12=28 how do i solve this equation?
asked Oct 15, 2012 in Pre-Algebra Answers by anonymous | 655 views
2 answers
what is the answer to this equation 8x-2=-9+7x
asked Sep 5, 2013 in Algebra 1 Answers by anonymous | 712 views
1 answer
8x − 2 = y 5y − 12x = -3
asked Mar 21, 2012 in Algebra 1 Answers by anonymous | 726 views
1 answer
8x=9-5y 8x-3y=-31 ordered pair
asked Nov 12, 2014 in Algebra 1 Answers by anonymous | 940 views
1 answer
what -4x-15=5y , 8x+4y=3 using substaution
asked May 23, 2014 in Algebra 1 Answers by anonymous | 872 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. complete the following. 825 use each digit once .make the two smallest 3 digit numbers and two largest 3-digit number (2)
  4. Solve 15 -1(12÷4+1)? (4)
  5. 8:4(5+2) (3)

Most popular tags

87,542 questions
99,771 answers
2,417 comments
507,110 users