add.
1. x/12+3x/12
subtract.
2. 5x-3 /6 -x+3 / 6
2007-12-07 06:54:59 · 9 answers · asked by God Bless America!~ 4 in Science & Mathematics ➔ Mathematics
PROBLEM 1:
Denominators are already the same (12), so just add the numerators and put it over the common denominator:
= (x + 3x) / 12
= 4x / 12
Divide top and bottom by 4:
= x / 3
PROBLEM 2:
Same method (assuming those are two fractions being subtracted). Combine numerators over the denominator 6:
(5x - 3) - (x + 3)
---------------------
.......... 6
Distribute the minus sign through the parentheses:
5x - 3 - x - 3
-----------------
........ 6
4x - 6
--------
... 6
Divide top and bottom by 2:
2x - 3
--------
... 3
2007-12-07 07:00:09 · answer #1 · answered by Puzzling 7 · 2⤊ 0⤋
1. x/12+3x/12= 4x/12
2. 5x-3 /6 -x+3 / 6=24x
2007-12-07 08:53:51 · answer #2 · answered by viet_azngirl27 2 · 0⤊ 0⤋
1. x/12+3x/12
= 4x/12 = x/3
2. 5x-3 /6 -x+3 / 6
is that (5x-3)/6 - (x+3)/6 = (4x-6)/6 = (2x-3)/3
= 2/3 x -1
or
5x -0.5 -x +0.5 ? = 4x
that's without brackets
(but we have all added them for you it seems)
KIS Keep it simple
2007-12-07 07:33:29 · answer #3 · answered by Anonymous · 0⤊ 0⤋
x/12+3x/12 = ( x + 3x ) / 12 = 4x / 12 = x / 3
5x-3 /6 -x+3 / 6 = ( 5x - 3 - x - 3 ) / 6 = ( 4x - 6 ) / 6
2007-12-07 06:57:49 · answer #4 · answered by jgoulden 7 · 0⤊ 1⤋
(x/ 12) + (3x/12) = 4x / 12 = x/3
(5x-3)/6 - (x-3)/6
(5x -3-x+3)/6 = (4x+0)/6
2x/3
2007-12-07 09:39:21 · answer #5 · answered by james w 5 · 0⤊ 0⤋
1. x/12+3x/12
= 4x/12
= x/3
2007-12-07 06:58:16 · answer #6 · answered by harry m 6 · 0⤊ 1⤋
1) ( x / 12) + ( 3x / 12)
=( 4x / 12)
= ( x / 3)
2) (5x-3 /6 ) - (( x +3 ) / 6)
=4x/6
=2x / 3
2007-12-07 07:00:48 · answer #7 · answered by Murtaza 6 · 0⤊ 2⤋
r u like a math student or teacher
2007-12-07 08:03:11
·
answer #8
·
answered by angel star 5
·
0⤊
0⤋
1. (1/3)x
2. (2/3)x
2007-12-07 06:59:45 · answer #9 · answered by geezuskreyest 5 · 0⤊ 3⤋