solve for x and y: 15x- 18- 2y= -3y+ y, 10x+ 7y+ 20= 4x+ 2

solve for x and y
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

solve for x and y: 15x- 18- 2y= -3y+ y, 10x+ 7y+ 20= 4x+ 2

We'll work both equations to get the x and y terms on the left,
and any constant value on the right.

15x - 18 - 2y= -3y + y
15x - 2y + 3y - y = 18
15x = 18
x = 18/15
x = 6/5

Now, we'll begin solving the second equation, and
substitute the value of x when get to an optimal place.

10x + 7y + 20 = 4x + 2
10x - 4x + 7y = 2 - 20
6x + 7y = -18
6 * (6/5) + 7y = -18
36/5 + 7y = -18
7y = -18 - 36/5
7y = -90/5 - 36/5
7y = -126/5
y = (-126/5) * 1/7
y = -18/5
by Level 11 User (78.4k points)

Related questions

1 answer
-2(18-3y)=7y+2y
asked Apr 5, 2017 in Pre-Algebra Answers by James | 792 views
1 answer
smiplify 4x^2-15x^2+8x^2
asked Mar 4, 2013 in order of operations by anonymous | 707 views
1 answer
3(4x+7y)-4(3x-y)
asked Nov 26, 2012 in Algebra 2 Answers by anonymous | 851 views
1 answer
solve for x and y: y=4x+4, 3x+2y=12
asked Mar 11, 2012 in Algebra 1 Answers by anonymous | 849 views
1 answer
2x + 7y - y - x
asked Dec 2, 2012 in Word Problem Answers by anonymous | 755 views
1 answer
-3x+2y=2 solve for y
asked Jan 10, 2013 in Algebra 1 Answers by anonymous | 941 views
1 answer
solve for x. 2y=-x-6 and -3x+y=-10
asked Mar 5, 2012 in Algebra 1 Answers by anonymous | 877 views
3 answers
2x + 5 = 3y – 4
asked Jul 17, 2012 in Pre-Algebra Answers by anonymous | 1.5k views
1 answer
Solve 1/4x=12
asked Nov 28, 2012 in Pre-Algebra Answers by anonymous | 850 views
1 answer
solve for x and y
asked Jan 12, 2013 in Geometry Answers by anonymous | 721 views
1 answer
find realnumber x and y for 7x+5i=14-15i
asked May 5, 2013 in Geometry Answers by anonymous | 834 views
1 answer
find x and y for the points (-4,6) and (3,-7)
asked Mar 25, 2013 in Algebra 1 Answers by anonymous | 675 views
1 answer
Solve x/b+y/a=2 x/a+y/b=a²+b²/ab
asked Sep 27, 2012 in Algebra 2 Answers by anonymous | 834 views
1 answer
1+2/2!+3/3!+4/4!.........
asked Sep 27, 2013 in Calculus Answers by anonymous | 733 views
1 answer
What is the answer to 2x = 8
asked Feb 2, 2013 in Algebra 1 Answers by anonymous | 704 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
100,328 answers
2,420 comments
755,164 users