how do u do adding and subtracing unlike frations...............i don't understand plz lke 5/8+(-3/4)
2007-09-30 12:36:22 · 7 answers · asked by Evelyn S 2 in Science & Mathematics ➔ Mathematics
5/8+(-3/4)=
5/8+(-6/8)=
well whatever anyway i know the answer it is -1/8
negative one eigth
2007-09-30 12:42:41 · answer #1 · answered by Priya 3 · 0⤊ 0⤋
5/8 + 3/4
This problem is simple. First, you "make" the denominators the same. The denominator in 5/8 is 8, and the denominator in 3/4 is 4.
Multiply the denominator of 4 by 2, and the numerator of 3 by 2 (to distribute it evenly):
5/8 + 3/4
5/8 + 6/8
Now it's very simple. 5/8 + 6/8 equals 11/8. If your teacher tells you leave it as an improper fraction, that's the answer. If not, change it to a mixed number.
2007-09-30 19:43:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
to do it you must find the "lowest common denominator"
5/8 + (-3/4) LCD is 8
5/8 + (-3/4)(2/3)
5/8 + -6/8 = - 1/8
practice it. It may be hard at 1st but with practice you can master this skill.
2007-09-30 19:43:42 · answer #3 · answered by Will 4 · 0⤊ 0⤋
u have to flip -3/4 to make it positive and then find common denomintars n then add the numerators
ex/ 5/8 + (-3/4)
=5/8 + 4/3
=15/24+32/24
=47/24
2007-09-30 19:43:41 · answer #4 · answered by gurjotgrewal_2 1 · 0⤊ 0⤋
5/8 + 3/4 .. you have to make the denominator equal... so multiply num and den of 3/4 by 2 you get 6/8. now add 11/8
2007-09-30 19:40:39 · answer #5 · answered by chitrakg 2 · 0⤊ 1⤋
you need to find a common denominater...
-3/4 multiply both by 2 so you will get -6/8 and then you do the math..
5/8 + (-6/8) you will get - 1/8
2007-09-30 19:41:37 · answer #6 · answered by cd 2 · 0⤊ 0⤋
find a common denominator so it will be 5/8 + (-6/8)
2007-09-30 19:39:53 · answer #7 · answered by Anonymous · 0⤊ 0⤋