the difference of a number and 7 is 21

please i  need this so i learn about it.
in Other Math Topics 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

If x is the number x-7=21, so adding 7 to each side: x=28. The number is 28.

by Top Rated User (1.2m points)

Related questions

1 answer
the difference between 24 and a number is 7
asked Jan 21, 2013 in Algebra 1 Answers by anonymous | 1.4k views
1 answer
the difference of a number and 7 is 8
asked Sep 16, 2012 in Algebra 1 Answers by anonymous | 542 views
1 answer
the difference of a number and 7 is 8
asked Sep 13, 2012 in Algebra 1 Answers by anonymous | 660 views
6 answers
an even number between 12 and 29 with digits whose difference is 7?
asked Aug 25, 2011 in Word Problem Answers by anonymous | 5.2k views
1 answer
What is the next number in the sequence 7, 21, 8, 72, 9, ?
asked Feb 17, 2016 in Other Math Topics by anonymous | 2.3k views
1 answer
five more than two times the difference of three and a number
asked Mar 21, 2019 in Other Math Topics by anonymous | 3.6k views
1 answer
three times the difference of nine and a number
asked Feb 14, 2016 in Other Math Topics by Mathical Level 10 User (57.4k points) | 1.4k 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
100,289 answers
2,420 comments
741,987 users