plsss....show the solution and checking :D :D
2006-07-16 23:54:09 · 7 answers · asked by marcylina m 1 in Science & Mathematics ➔ Mathematics
pls...show the steps and solution w/ checking
2006-07-17 00:15:01 · update #1
-1/x + 3/2y= 0
3/2y = 1/x
2y/3 = x
1/x + 1/y = 1/9 ; x = 2y/3
so 3/2y + 1/y = 1/9 or 3/2y + 2/2y = 1/9
5/2y = 1/9
45= 2y
22.5 = y
15 = x
Plug in the values, it works
2006-07-16 23:57:25 · answer #1 · answered by Anonymous · 0⤊ 0⤋
-1/x + 3/2y=0. So 1/x = 3/2y
Eliminate 1/x from 1/x + 1/y=1/9
Use 1/x = 3/2y. It leads to
3/2y + 1/y = 1/9 Left and right times 18y
27 + 18 = 2y
So 2y = 45 and y = 22.5
This into 1/x = 3/2y gives 1/x = 3/45
Then x = 15.
So x =15 and y = 22.5
Check
1/x + 1/y=1/9 gives 1/30 + 1/22.5 = 1/9 true?
Left and right times 360 gives 12 + 16 = 40 is really true.
-1/x + 3/2y=0 gives -1/15 + 3/45 = 0 is alright.
2006-07-17 10:22:54 · answer #2 · answered by Thermo 6 · 0⤊ 0⤋
adding xgets eliminated and 5/2y=1/9 2y=45 y=45/2
substituting x=15
2006-07-17 07:33:50 · answer #3 · answered by raj 7 · 0⤊ 0⤋
1/x+1/y=1/9
-1/x+3/2y=0
let 3/2y=1/x
put the value of 1/x in the eqn 1/x+1/y=1/9
3/2y+1/y=1/9
u got 45/2=y
put the value of y in the above eqn u get the value of x
2006-07-17 07:13:46 · answer #4 · answered by corrona 3 · 0⤊ 0⤋
1/x + 1/y = 1/9
(+) -1/x + 3/2y = 0
----------------------------
0 + 5/2y = 1/9
y = 22.5
x = 15
2006-07-17 07:03:05 · answer #5 · answered by deadmeat 3 · 0⤊ 0⤋
X = 15 and Y = 22.5
2006-07-17 07:53:57 · answer #6 · answered by Sherlock Holmes 6 · 0⤊ 0⤋
1/x + 1/y=1/9------------------(1)
-1/x + 3/2y=0------------------(2)
=>3/2y=1/x
=>x=2y/3
so => 3/2y+1/y=1/9
=>3/2y+2/2y=1/9
=>2y=45
y=45/2
back(1)
x=45/3
2006-07-17 07:09:56 · answer #7 · answered by sulabbb 2 · 0⤊ 0⤋