7x-4y=12, x+y=12

I need help with the following equation.
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

7x - 4y = 12 and x + y = 12

multiply the second equation by 4

becomes 4x + 4y = 48

add it to the first equation and the y's cancel

11x = 60 so x = 60/11

then 60/11 + y = 12

so y = 72/11

(60/11, 72/11)
by Level 5 User (11.9k points)

Related questions

1 answer
Solve for y. 7x-4y=18
asked Sep 2, 2013 in Algebra 1 Answers by anonymous | 1.3k views
1 answer
4y-7x=18 solve for y
asked Feb 17, 2013 in Algebra 1 Answers by anonymous | 777 views
0 answers
4y+7x=-11 solve for y
asked Jul 14, 2012 in Algebra 2 Answers by anonymous | 1.2k views
1 answer
find the x-,y- intercepts 7x-4y=14
asked Jan 14, 2012 in Algebra 1 Answers by Cb009 Level 3 User (2.2k points) | 1.4k views
3 answers
(7x+y)-(6x+2y)-(x-4y)
asked Oct 27, 2011 in Algebra 1 Answers by anonymous | 1.1k views
0 answers
combine:(7x+y)-(6x+2y)-(x-4y)
asked Oct 4, 2011 in Algebra 2 Answers by anonymous | 755 views
1 answer
Solve the simultaneous equations 13x - 6y = 20, 7x + 4y = 18.
asked Aug 27, 2020 in Other Math Topics by anonymous | 5.2k views
1 answer
(7x-6w)+(4y+3w)+(5x+7y)
asked Jul 11, 2016 in Algebra 1 Answers by anonymous | 889 views
1 answer
7x+4y= 18.19 x=3y-.58
asked Sep 30, 2013 in Algebra 1 Answers by Brett | 625 views
2 answers
9x-4y=2000,7x-3y=2000
asked Mar 19, 2013 in Algebra 1 Answers by anonymous | 3.5k views
1 answer
7x^7y^5+49x^4y^4+35xy
asked Feb 20, 2013 in Algebra 2 Answers by anonymous | 647 views
1 answer
(8,-7);7x-4y=5
asked Feb 3, 2013 in Algebra 2 Answers by anonymous | 767 views
1 answer
7x-4y=-3c, 3x+4y+10
asked Jan 8, 2013 in Algebra 1 Answers by anonymous | 675 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. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,281 answers
2,420 comments
733,626 users