2007-08-25 15:40:09 · 9 answers · asked by JILL S S 1 in Science & Mathematics ➔ Mathematics
Presumably:-
(1/3) x + (3/4) x = 13
4x + 9x = 156
13x = 156
x = 12
2007-08-29 11:09:11 · answer #1 · answered by Como 7 · 0⤊ 0⤋
Alright,
First we find the lowest common denominator (LCD);
3*4 = 12
Now we multiply the entire equation by the LCD
12(1/3x + 3/4x = 13)
Then we get;
4x + 9x = 156
13x = 156
Divide by 13
x = 12
Hope this helps!
: )
2007-08-25 22:46:15 · answer #2 · answered by God 3 · 0⤊ 0⤋
To solve this, multiply both sides by 12:
4x+9x=156
combine the like terms on the left:
13x=156
now divide both sides by 13:
x=12
:)
2007-08-25 22:53:59 · answer #3 · answered by Wes B 3 · 0⤊ 0⤋
two possibilities
1/3 x + 3/4 x = 13
x = 13
1/ ( 3 x ) + 3/ ( 4 x ) = 13
[ 4 + 9 ] / (12 x ) = 13
13 = 13 (12 x)
x = 1/12
2007-08-25 22:46:57 · answer #4 · answered by CPUcate 6 · 1⤊ 1⤋
Do you mean (1/3)x + (3/4)x = 13 or 1/(3x) +3/(4x) = 13?
Please state your question clearly with brackets included.
(1/3)x + (3/4)x = 13
(4/12)x + (9/12)x = 13
(13/12)x = 13
13x = 13(12)
x = 12
1/(3x) +3/(4x) = 13
4/(12x) + 9/(12x) = 13
13/(12x) = 13
13 = 13(12x)
12x = 1
x = 1/12
2007-08-25 22:43:30 · answer #5 · answered by Anonymous · 2⤊ 1⤋
12.
2007-08-25 22:48:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋
12?
2007-08-25 22:46:55 · answer #7 · answered by SurferDudeJAS 2 · 0⤊ 0⤋
4/12x + 9/12x = 13
13/12x = 13
x = 12
2007-08-25 22:44:30 · answer #8 · answered by veolapaul 5 · 0⤊ 0⤋
wouldnt it be 13x since theres an unknown variable for the algebraic equation?
2007-08-25 22:44:05 · answer #9 · answered by Chuy 2 · 0⤊ 0⤋