x=5/4y+4
4x-5y=17
this one is to hard for me please help
2007-02-25 02:58:07 · 4 answers · asked by chickiejam 1 in Science & Mathematics ➔ Mathematics
Did you mean 5/(4y), or (5/4)y, is not the same, let me know by mail and I'll try help you
2007-02-25 03:03:47 · answer #1 · answered by diamond 3 · 0⤊ 0⤋
Multiply the first equation by 4
4x = 5y + 16
Write the second equation this way:
4x = 17 + 5y
4x = 5y + 17
Now you can see that 4x is equal to two different values.
That is impossible, so ...
... something is wrong with the problem.
Is the first equation x = (5/4) y + 4, or is it
x = [ 5 / (4y) ] + 4 ?
2007-02-25 11:04:25 · answer #2 · answered by morningfoxnorth 6 · 0⤊ 1⤋
x=5/4y+4
4x - 5y =17
x - 4 = 5/4y
(x - 4) x 4 = 5y
4x - 16 = 5y
4x - 5y = 20
No, because 20 =/= 17
2007-02-25 11:25:19 · answer #3 · answered by netthiefx 5 · 0⤊ 0⤋
you have two equations,
4x-5y=16 (this is the first multiplied by four and rearranged)
4x-5y=17
This can't be solved. Since subtracting one equation from the other gives something like 0=1 or 0=-1, which is impossible.
2007-02-25 11:06:44 · answer #4 · answered by Mike R 1 · 0⤊ 0⤋