Solve the following systems by substitution or elimination. (show your work) 4x-7y=25; 8x+3y=-1

I don't know how to solve this equation...
in Algebra 1 Answers by

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

4x-7y=25 8x+3y=-1 -2(4x-7y=25) -8x+14y=-50 8x+3y=-1 0x+17y=-51 17y=-51 divide by 17, y=-3. plug 3 for y in any of the equations: doesnt matter which one. 8x+3(-3)=-1 8x-9=-1 8x=8 x=1 answers are x=1,y=-3
by

Related questions

1 answer
Solve using Gaussian Elimination. Show your work!
asked Mar 14, 2012 in Geometry Answers by anonymous | 1.8k views
1 answer
Solve using the elimination method. Show your work.
asked Feb 6, 2012 in Algebra 1 Answers by friend11 Level 1 User (120 points) | 909 views
1 answer
how would you work 6c-8h=50 6h=22-4c using substitution or elimination?
asked Oct 30, 2011 in Algebra 2 Answers by jessilyn211987 Level 1 User (120 points) | 783 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
100,279 answers
2,420 comments
732,204 users