Tolong kerjain donggg

Misalkan 
m = 1/x
n = 1/y
maka sistem menjadi
6m + 10n = -1
4m + 25n =  3

eliminasi
12m + 20n = -2
12m + 75n =  9
------------------------ (-)
55n = 11
n = 11/55
n = 1/5

subtitusi
4m + 25n =  3
4m + 25(1/5) =  3
4m + 5 = 3
4m = 3 - 5
4m = -2
m = -1/2

penyelesaian
m = -1/2
1/x = -1/2
x = -2

n = 1/5
1/y = 1/5
y = 5

jadi HP = {(-2,5)}