1 7/8+3/4=
just show me how to do it
thanx
2006-09-19 09:57:20 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
explain it pls
2006-09-19 10:01:38 · update #1
1 7/8 + 3/4 = 15/8 + 6/8 = 21/8 = 2 5/8.
(1 7/8 to 13/8: Multiply 8 by 1 and add 7, place over 8)
(3/4 to 6/8: Multiply numerator and denominator by 2 to match the denominator in 13/8)
Add 15/8 to 6/8 to get 21/8. Divide 21 by 8 to get 2 with a remainder of 5 (2 5/8).
2006-09-19 10:00:20 · answer #1 · answered by maegical 4 · 0⤊ 0⤋
Convert everything to common denominators:
1 7/8 is the same as 8/8 + 7/8
3/4 is the same as 6/8
so now it looks like:
8/8 + 7/8 + 6/8
If all denominators are the same, just add the numerators:
(8+7+6)/8 or 21/8
21/8 reduces down to 2 5/8
2006-09-19 17:02:38 · answer #2 · answered by Jonathon M 1 · 0⤊ 0⤋
You need a common denominator, which in this case is 8. The fraction then becomes 17/8+6/8, which equals 23/8, which equals 2 7/8.
2006-09-19 17:01:35 · answer #3 · answered by barbara m 3 · 0⤊ 0⤋
15/8+6/8=21/8=2 5/8
2006-09-19 17:01:14 · answer #4 · answered by raj 7 · 0⤊ 0⤋