2006-10-09 12:39:31 · 9 answers · asked by Jennifer S 3 in Education & Reference ➔ Homework Help
5u - 14 = -5 + 8u
5u - 14 +5 = 8u
5u - 9 = 8u
-9 = 8u - 5u
-9 = 3u
-3 = u
2006-10-09 12:42:31 · answer #1 · answered by Jeannie 7 · 1⤊ 0⤋
5u=14-5+8u
5u=9+8u
5u-8u=9
-3u=9
-u=9/3
-u=3
u= -3
2006-10-09 12:58:52 · answer #2 · answered by moosa 5 · 0⤊ 0⤋
5u - 14 = -5 + 8u
You should put all the "u" terms together. and simplify the equation
So, what you do to one side of the equation, you must do to the other.
5u -5u -14 = -5 + 8u - 5u
Simplify
14=-5 + 3u
Than simplify the numbers by adding five to each side
-14 + 5 = -5 +5 + 3u
Simplify
9=3u
Simplify again by dividing each side by three
u = 3
2006-10-09 12:45:10 · answer #3 · answered by Anonymous · 0⤊ 1⤋
5u - 14= -5 + 8u
-9 = 3u
-3 = u
2006-10-09 12:43:25 · answer #4 · answered by maverick 3 · 0⤊ 0⤋
Put the u's together and the ordinary numbers together; when a value (number or u) moves to the other side of the =, it changes from a minus number to a plus number (or vice versa). It's easier if you get the unknowns to one side and the numbers to the other.
So:
5u - 8u = -5 +14
-3u = 9
u = -3
(And no, you never need to know this stuff when you're a grownup. ;))
2006-10-09 12:51:13 · answer #5 · answered by pompeii 4 · 0⤊ 0⤋
(-8u +5u) - 14 = -5
-3u = -5 + 14
-3u = 9
u = - 9/3 or -3
2006-10-09 12:46:42 · answer #6 · answered by kmckenz754 1 · 0⤊ 0⤋
5u-14=-5+8u add -5u to each side
14=-5+3u add+5 to each side
19=3u divide both sides by 3
19/3=u can convert to mixed fraction, if wanted
2006-10-09 12:47:21 · answer #7 · answered by Anonymous · 1⤊ 1⤋
Solve for 'U'. First you subtract 5U from both sides, which will make it -14 = -5+3U. Than you add 5 which is -9=3U, than divide both sides by 3 which is -9/3, which is -3.
2006-10-09 12:44:15 · answer #8 · answered by Anonymous · 0⤊ 0⤋
-3u=9
u=-3
2006-10-09 12:42:54 · answer #9 · answered by raj 7 · 0⤊ 0⤋