2007-06-13 13:33:19 · 10 answers · asked by JeususismyRock! 1 in Science & Mathematics ➔ Mathematics
If you mean 2/(5x)...
5x/2 = -1/10
(5/2)x = -1/10
(2/5)(5/2)x = (2/5)(-1/10)
x = -2/50
x = -1/25
If you mean (2/5)x...
(5/2)(2/5)x = (5/2)(-10)
x = -10 * 5/2
x = -50/2
x = -25
2007-06-13 13:35:27 · answer #1 · answered by McFate 7 · 1⤊ 0⤋
2/5x = -10
by cross multiplication is 2 = -50x
isolate x and you get x = -2/50 or -1/25.
2007-06-13 20:39:09 · answer #2 · answered by saphira 2 · 0⤊ 0⤋
x = (2/5)/-10
2007-06-13 20:37:56 · answer #3 · answered by DB9 3 · 0⤊ 0⤋
25
2007-06-13 20:39:20 · answer #4 · answered by Anonymous · 0⤊ 1⤋
2/5x is the same as 2/5 *x
SO you can multiply by the reciprocal, (flip the fraction) and bam. youre done.
-10*5/2= -25=x
2007-06-13 20:37:00 · answer #5 · answered by Adeel 4 · 0⤊ 1⤋
If its what I think it says then this is how you do it:
2/5x=-10
multiply by 5/2
x=-25
hope that helps
2007-06-13 20:37:54 · answer #6 · answered by Anonymous · 1⤊ 1⤋
2/(5x)= -10
if that's the problem here is how you work it out.
first start out my multiplying boy sides by 5x
to get rid of the denomniator.. personally i dis like
fractions very much.
you then get
2= (-10)5x
then
2= -50x
then get x alone, divide both sides by -50
x= -2/50
simplify
x= -1/25
2007-06-13 20:39:58 · answer #7 · answered by Juni<3 2 · 0⤊ 0⤋
you need to get x by itself, to figure it out multiply 2/5 by its reciprocal, then do the same to the -10 on the other side to get the x by itself....
(5/2)(2/5)x = (5/2)(-10)
x = -50/2
x = -25
2007-06-13 20:44:41 · answer #8 · answered by haught21 1 · 0⤊ 1⤋
Isolate x
multiply both sides by 5/2
x=-50/2
x=-25
2007-06-13 20:35:04 · answer #9 · answered by samswebsite 4 · 0⤊ 1⤋
2/5 = -10x
2=5(-10x)
2=-50x
2/(-50) = x
x = -0.04
2007-06-13 20:41:12 · answer #10 · answered by viktor_08 2 · 0⤊ 0⤋