3a-3b/a-b
2x-4y/4y-2x
6a-3b/8a-4b
8xy-4z/3z-6xy
2006-10-19 00:02:21 · 10 answers · asked by avenger 2 in Science & Mathematics ➔ Mathematics
you should put some parenthesis but I guess that you mean
(3a-3b)/(a-b) =
[3(a-b)]/(a-b)=3
(2x-4y)/(4y-2x)=
[2(x-2y)]/[2(2x-y)]=
[x-2y]/[2x-y]
[6a-3b]/[8a-4b]=
3[2a-b]/4[2a-b]=3/4
[8xy-4z]/[3z-6xy]=
4(2xy-z)/[-3*(2xy-z)]=-4/3
2006-10-19 00:08:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋
(1) 3a-3b/a-b = 3(a-b)/a-b = 3
(2) 2x-4y/4y-2x = 2(x-2y) / -2(x-2y) = 2/-2 = -1
(3) 6a-3b/8a-4b = 3(2a-b) / 4(2a-b) = 3/4 = 0.75
(4) 8xy-4z/3z-6xy = 4(2xy-z) / -3(2xy-z) = 4/-3 = - 0.75
Basically the method is to identify the common factor in the numerator and denominator and remove that from both sides to get your answer.
2006-10-19 00:13:12 · answer #2 · answered by young_friend 5 · 0⤊ 0⤋
Factor the common factors out of the numerators and denominators of each fraction. In some cases, you'll want to factor out a negative factor. This is the same effect as factoring out a positive factor, but it flips the order of the two terms.
Thus:
3(a-b)/(a-b) = 3
2(x - 2y)/( -2(x - 2y) ) = -1
3(2a - b)/( 4(2a - b) ) = 3/4
4( 2xy - z )/( -3( 2xy - z ) ) = -4/3
2006-10-19 00:12:07 · answer #3 · answered by Ted 4 · 0⤊ 0⤋
3a - 3b/a - b
3 (a - b)/a - b
3
- - - - - - - - -
2x - 4y/ 4x - 2x
2(x - 2y) / 2(2x - y)
x - 2 / 2x - y
- - - - - - - - - - - - -
6a - 3b / 8a - 4b
3 (2a - b) / 4 (2a - b)
3/4
The Answer is 3/4
- - - - - - - - - - - - -
8xy - 4z / 3z - 6xy
4(2xy - z) / 3(z - 2xy
4(2xy - z) / -1[3(z - 2y)]
4(2xy - z / -3 (-z + 2xy)
- 4/3
The answer is - 4/3
- - - - - s
2006-10-19 01:56:32 · answer #4 · answered by SAMUEL D 7 · 0⤊ 0⤋
find the like terms
1) (a-b) from both top & bottom yields 3
2) (x-y) and (y-x) differ by a factor of -1 factor out 2(x-y) and denominator to negative....(x-2y) / (x+2y)
3) like terms are (2a-b) ... yields 3/4
4) (z-2xy) (2xy-z) by -1 .... 4/3
2006-10-19 00:26:31 · answer #5 · answered by Brian D 5 · 0⤊ 0⤋
Use the distributive property to get out similar pieces. A lot ends up cancelling out for these.
2006-10-19 00:05:05 · answer #6 · answered by Phil 5 · 0⤊ 0⤋
Use parentheses , thius will no-one understand .....
I guess this is what you meant :
(3a - 3b) / (a-b)
=
3*(a-b) / (a-b)
= 3
2006-10-19 00:06:01 · answer #7 · answered by gjmb1960 7 · 0⤊ 0⤋
I'm not study this question yet .. but maybe its right
i do this 3a-3b/a-b
3a-a=2a
3b-b=2b
Its Right ?
2006-10-19 01:02:49 · answer #8 · answered by Anonymous · 0⤊ 0⤋
(3a-3b)/(a-b) = 3
2(x-2y)/(-2(x-2y))=-1
3(2a-b)/(4(2a-b))=3/4
4(2xy-z)/(-3(2xy-z))=-4/3
2006-10-19 00:13:17 · answer #9 · answered by Anonymous · 0⤊ 0⤋
i would've wanted to help, only that i think it's your homework, and you have to roll up your sleeves, and slug it out. best way to learn..
2006-10-19 01:25:18 · answer #10 · answered by doe 3 · 0⤊ 0⤋