-3(3y-7)=21-9y

solve for 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

Divide through by -3: (3y-7)=-(7-3y), so 3y-7=-7+3y which is true for all y, because the left side is the same as the right side—it is an identity. There are infinite solutions for y.

 

 

by Top Rated User (1.2m points)

Related questions

1 answer
the point of intersection for -3x-7y<21 and -7x-9y<63
asked Oct 18, 2013 in Algebra 1 Answers by mklein593@sbcglobal.net | 719 views
1 answer
solve for x and y in x+3/13y=-21/13, 72=-6x+9y
asked May 23, 2013 in Algebra 1 Answers by anonymous | 853 views
1 answer
7y+3+3y-5+9y+7
asked Oct 23, 2017 in Geometry Answers by anonymous | 1.1k views
1 answer
2x-3y=7,6x+9y=11 solve by elimination method
asked Aug 15, 2014 in Other Math Topics by anonymous | 4.4k views
1 answer
4x ²+7 x y+3y ² over 16x ²-9y ² simplify
asked Aug 14, 2013 in Algebra 1 Answers by please | 575 views
1 answer
use implicit differentiation to find x^3y-9y^2=3x+7
asked May 12, 2013 in Calculus Answers by anonymous | 1.0k views
1 answer
how to solve (y 6)(3y 7)/(9y 2)(3y 7)
asked Mar 30, 2013 in Algebra 2 Answers by anonymous | 619 views
1 answer
6x – 9y = 16 2x – 3y = 7
asked Oct 14, 2012 in Algebra 2 Answers by anonymous | 3.4k views
2 answers
-6x - 9y = c, 2x - 3y = -4
asked Oct 26, 2020 in Algebra 2 Answers by anonymous | 990 views
1 answer
(9y-7x+15a) + (-3y+8x-8a)
asked Feb 4, 2019 in Other Math Topics by Miranda Banks | 1.0k views
1 answer
f(x,y)=y^3-3y^2-x^2-9y+10x-60
asked Jul 21, 2015 in Calculus Answers by anonymous | 596 views
1 answer
3x+9y=11,6x+3y=7xy by elimination method
asked Apr 24, 2013 in Algebra 2 Answers by anonymous | 1.2k views
1 answer
2x-3y=5 and -6x+9y=12
asked Jan 1, 2013 in Algebra 2 Answers by anonymous | 1.7k views
0 answers
what is the product of 8y+15-3y+9y+12=22-6+10y+27=
asked Oct 31, 2012 in Algebra 1 Answers by anonymous | 473 views
1 answer
solve x+3y=9 and -3x-9y=-27
asked Jan 30, 2012 in Algebra 2 Answers by anonymous | 1.5k 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
732,218 users