anyone good with numbers?

0 ⤊

anyone good with numbers?

The sum of two numbers is 31. Their difference is 7. What are the two numbers?

2006-09-23 16:31:36 · 4 answers · asked by ♠ melisa ♠ 2 in Education & Reference ➔ Homework Help

4 answers

let one no be x
x+x+7=31
2x=31-7
x=24/2
x=12
x+7=19

2006-09-23 16:39:18 · answer #1 · answered by bookwormanu 2 · 0⤊ 0⤋

12 19

2006-09-23 23:37:48 · answer #2 · answered by BIGDADDYBEN 1 · 0⤊ 0⤋

12 and 19

2006-09-23 23:34:17 · answer #3 · answered by Dave 4 · 0⤊ 0⤋

All you have to do is divide 31 by two to get what's right in the middle. In this case it is 15.5. Then, take 7 and divide that by two-you get 3.5. Take the 15.5 and add 3.5--you get 19. Take the other 15.5 and subtract 3.5 to get 12. 19+12=31 with a difference in 7. Voala!

2006-09-23 23:39:25 · answer #4 · answered by Kelly M 4 · 0⤊ 0⤋