4 2/7- 2 5/7=?
2007-01-04 02:32:15 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
"4 2/7 - 2 5/7"
First you have to borrow 7/7 from the 4 and add it to 2/7 and you get:
"3 9/7 - 2 5/7"
Now it's much easier to simplify right? Subtract 2 from 3, and 5/7 from 9/7:
You're simplified answer is: "1 4/7"
2007-01-04 02:45:17 · answer #1 · answered by ViCKi!™|` 5 · 0⤊ 0⤋
4 2/7 - 2 5/7
change all to 7'ths
4 x 7 + 2 = 30
2 x 7 + 5 = 19
30/7 - 19/7 = 11/7 = 1 4/7
2007-01-04 16:24:49 · answer #2 · answered by David C 2 · 0⤊ 0⤋
First... convert everything to "7ths" by multiplying the whole number of each entity by 7 (the denominator) and then add that number to the numerator...so...
4 2/7 becomes 30/7... and
2 5/7 becomes 19/7...so
30/7 - 19/7 = 11/7 or 1 4/7
2007-01-04 10:51:08 · answer #3 · answered by Surveyor 5 · 0⤊ 0⤋
4 2/7-2 5/7=
3 2/7+7/7=3 9/7-2 5/7=
1 4/7--Answer
2007-01-04 10:40:13 · answer #4 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
4 2/7 = 30/7
2 5/7 = 19/7
30/7-19/7 = 11/7 = 1 4/7
2007-01-04 10:40:34 · answer #5 · answered by hcbiochem 7 · 0⤊ 0⤋