4y + z = -29, 2y + z = -19

how do i solve it
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

Subtract 2nd equation from 1st: 2y=-10, so y=-5; substitute this value into either equation: 2y+z=-19 becomes -10+z=-19, so z=-19+10=-9.

Check answer: 4y+z=-20-9=-29; 2y+z=-10-9=-19.

 

by Top Rated User (1.1m points)

Related questions

2 answers
solving linear systems using substitution
asked Oct 17, 2012 in Word Problem Answers by anonymous | 786 views
1 answer
-9x+8y=29 - -18x+4y=-19
asked Nov 28, 2012 in Algebra 2 Answers by anonymous | 807 views
1 answer
0.90y - 19 + y >= 2y - 10 - 0.4y
asked Apr 16, 2013 in Algebra 1 Answers by anonymous | 576 views
1 answer
X+y+z=3 x+2y+3z=4 x+4y-9z
asked Oct 1, 2024 in Statistics Answers by Habib passha | 179 views
1 answer
Minimize Z = 4x + 6y subject to 2x + 4y ≥ 20 3x + 2y ≤ 24 x, y ≥ 0
asked Nov 20, 2021 by Brenda | 2.8k views
1 answer
4y+3z=-7 12x-3y+z=-7 -6x+2y-2z=12
asked Feb 27, 2019 in Algebra 2 Answers by Tallent Level 1 User (300 points) | 1.5k views
1 answer
solve for x,y,z. 3x-4y+2z -5x+3y+6z -6x+2y-8z
asked Dec 1, 2018 in Algebra 2 Answers by Kevin | 696 views
1 answer
6x-4y+2z=8 5x+2y+z=24 -3x+3y-3z=-12 by elimination
asked Nov 12, 2012 in Algebra 2 Answers by anonymous | 1.6k views
1 answer
solve linear equation 6x-2y+2z=2, 4x+8y-2z=5, -2x-4y+z=-2
asked Oct 9, 2012 in Pre-Algebra Answers by anonymous | 1.3k 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

87,538 questions
99,875 answers
2,417 comments
544,574 users