I WOULD LIKE TO SEE WORK IF POSSIBLE.... THANK YOU!!!!!!!
2007-10-10 08:26:30 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
If you mean:
3/(x + 4) = 5/x then:
cross multiply to get
5x + 20 = 3x
subtract 5x from both sides to get
20 = -2x
flip it & multiply both sides by -1 to get
2x = -20
divide both sides by 2 to get your answer:
x = -10
2007-10-10 08:38:05 · answer #1 · answered by That One Guy 2 · 0⤊ 1⤋
(3/X)+4 = 5/X
X(3/X)+4X=X(5/X) -> Multiply X out to simplify
3+4X=5
4X=5-3 -> Subtract Both Sides by 3
4X=2
X=2/4=1/2=0.5 ->Isolate X by dividing both sides by 4
To check Answer Let x = 0.5 and see if the problem works out.
3/0.5 + 4 = 5/0.5
6+4=10
Hopefully this helps.
2007-10-10 15:42:50 · answer #2 · answered by Contact Lens King 4 · 0⤊ 0⤋
You have to multiply both sides by x so you'd get
x(3/x + 4) = (5/x)x
3 + 4x = 5
4x=2
x= 1/2
2007-10-10 15:35:04 · answer #3 · answered by Joe D 4 · 0⤊ 0⤋
3/x + 4 = 5/x
4 = 5/x - 3/x
4 = 2/x
x/2 = 1/4
x = 1/2
2007-10-10 15:41:54 · answer #4 · answered by Ivan D 5 · 0⤊ 0⤋
3/(x+4) = 5/x => x = -10
If --you-- supply the details, then you'll 'understand' how to do simple algebraic manipulations the next time. And isn't that what you're supposed to be learning anyway?
Doug
2007-10-10 15:51:16 · answer #5 · answered by doug_donaghue 7 · 0⤊ 1⤋