2(n+1)/7 > n+4/5
Thnx!
2007-03-21 11:00:10 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
2(n+1)/7 > n+4/5
this is like a proportion!
simplify every thing and you have
2n+2/7 > n+4/5
so cross multiply and you get
10n+10>7n+18
subtract 7n from both sides
3n>18
then divide both sides by 3
n>6
Ta Da!!!
2007-03-21 11:27:15 · answer #1 · answered by Smuckers 4 · 0⤊ 0⤋
2(n+1)/7 > (n+4)/5
Cross multiply.
5*2(n+1) > 7*(n+4)
10(n+1) > 7(n+4)
10n + 10 > 7n + 28
10n-7n > 28-10
3n > 18
n > 6
2007-03-21 18:06:09 · answer #2 · answered by gamma_wave 3 · 0⤊ 0⤋
2(n+1)/7 > n+4/5
what you do first, is to distribute the 2. so:
(2n + 2)/7 > n + 4/5
multiply both sides by 7 so that the fraction in the left dissapears. so:
2n + 2 > 7n + 28/5
to isolate n, subtract 2n to both sides, then subtract 28/5 to both sides. so:
2 - 28/5 > 5n (to add the things on the left, make them like terms so:)
10/5 - 28/5 > 5n
which is:
-18/5 > 5n (then, multiply 1/5 to both sides to get rid of the 5n)
-18/25 > n
CHOOSE AS BEST ANSWER PLEASE!
2007-03-21 18:05:43 · answer #3 · answered by NONAME 3 · 0⤊ 0⤋
GOSH! why do you guys always have hard problems! how about 2+2 or something?!
2007-03-21 18:04:46 · answer #4 · answered by me! 2 · 0⤊ 0⤋