Question

Gunakan metode gabungan

-5+y=4x-12y+6
5x-5(y+1)=2(3y-1)+3x+20

Answer 1

-5+y=4x-12y+6
y+12y-4x=6+5
13y-4x = 11

5x-5(y+1)=2(3y-1)+3x+20
5x-5y-5=6y-2+3x+20
5x-3x-5y-6y=20-2+5
2x-11y=23

-4x+13y=11
2x-11y=23

×1== -4x+13y=11
×2==4x+22y=46
______________
35y=57
y=57/35
y= 1 22/35

2x-11(57/35)=23
2x- 627/35 =23
2x = 23+17 32/35
x= 40 32/35


hp = ( 40 32/35, 1 22/35)