2n-1 / 3 = n-4 / 5
a. n= -1
b. n= 1
c. n= 2
d. n= 13/17
2007-06-05 07:51:58 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2n-1 / 3 = n-4 / 5
5(2n - 1) = 3(n - 4)
10n -5 = 3n - 12
7n =-7
n = -1
2007-06-05 07:58:02 · answer #1 · answered by John S 6 · 0⤊ 0⤋
Multiplying through by a common denominator of 15 gets rid of your fractions.
(2n - 1) / 3 = (n - 4) / 5.
15(2n - 1) / 3 = 15(n - 4) / 5. Canceling common factors,
5(2n - 1) = 3(n - 4). Distributing,
10n - 5 = 3n - 12. Adding -3n + 5 to both sides,
7n = -7. Dividing by 7,
n = -1. The answer is (a).
2007-06-05 14:59:44 · answer #2 · answered by Louise 5 · 0⤊ 0⤋
(2n - 1) / 3 = (n - 4) / 5
10n - 5 = 3n - 12
7n = -7
n = -1
2007-06-05 14:57:31 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
a
2007-06-05 14:56:09 · answer #4 · answered by pioneers 5 · 0⤊ 0⤋