2007-10-20 06:29:03 · 10 answers · asked by . 1 in Science & Mathematics ➔ Mathematics
- 2 n = - 3
2n = 3
n = 3 / 2
2007-10-23 19:58:48 · answer #1 · answered by Como 7 · 0⤊ 0⤋
7n-10-9n=-13
....+10......+10
7n-9n=-3
-2n=-3
/-2.../-2
n=3/2 or 1.5
First add 10 to both sides. Then combine like terms (7n-9n) You get -2n=-3. Divide by -2 on both sides..-3/-2=3/2. So n=3/2 or n=1.5. Hope this helps =]
2007-10-20 13:36:50 · answer #2 · answered by Mariee 4 · 0⤊ 0⤋
7n - 9n = 10 - 13
-2n = -3
n = 3/2
2007-10-20 13:38:43 · answer #3 · answered by Anonymous · 0⤊ 0⤋
7n - 10 - 9n = -13
add the 10 to the -13.
7n - 9n = -3
-2n = -3
divide the -2 to the other side.
n = 3/2
n = 1.5
plug the n = 1.5 back in to check
7(1.5) - 10 - 9(1.5) = -13
2007-10-20 13:36:05 · answer #4 · answered by Anonymous · 1⤊ 0⤋
x=2/3
2007-10-20 13:46:58 · answer #5 · answered by kemunkhimhun 1 · 0⤊ 0⤋
7n-10-9n=-13
-2n=-3
n=2/3
2007-10-20 13:38:23 · answer #6 · answered by Azura 2 · 0⤊ 1⤋
2/3
2007-10-20 13:35:57 · answer #7 · answered by Anonymous · 0⤊ 2⤋
7n- 10- 9n =-13
-2n -10 =-13
-2n = -3
n=2/3 (.67)
2007-10-20 13:34:52 · answer #8 · answered by Anonymous · 0⤊ 2⤋
-2n - 10 = -13
-2n = -3
n = 3/2
2007-10-20 13:32:50 · answer #9 · answered by Ms. Exxclusive 5 · 0⤊ 0⤋
-2n-10=-13
add 10 for bothsides
-2n=-3
divid by -2
n=3/2
2007-10-20 13:35:46 · answer #10 · answered by nosa 2 · 0⤊ 0⤋