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6x-8y=13.....(2)
_________-
- 2x=-11
X =11/2
Nilai y
Substitusikan kesalah satu persamaan
4×11/2+8y=2
22+8y=2
8y=2-22
8y=-20
Y=-20/8 kalau dikecilkan - 5/2
Jadi HP=(11/2,-5/2)
No 2.
2(x+y)= 5
2x+2y=5.......(1) ×2) 4x+4y=10
4x-3y =-18..... (2) ×1) 4x -3y=-18
____________-
7y=28
Y=4
Nilai x Substitusikan kesalah satu persamaan
4x-3×4=-18
4x-12=-18
4x=-6
X=-6/4 kalau disederhanakan - 3/2
Jadi HP=(-3/2,4)