2x-4y=10 dan x+2y=9 plis kasih tau

2x - 4y =10 x1 - > 2x - 4y = 10
X + 2y =9 x2 - > 2x +4y = 18
- - - - - - - - - - - - (-)
- 8y = - 8, y=1
Substitusi y=1
X+2y = 9
X+2(1)=9
X=9-2
X=7
HP {7,1}

[tex]2x - 4y = 10 \\ 2x + 4y = 18 \\ - - - - - - - \: + \\ 4x \: = \: 28 \\ x = 7 \\ \\ subtitusi \: x = 7 \\ 2x - 4y = 10 \\ 2(7) - 4y = 10 \\ 14 - 4y = 10 \\ - 4y = - 4 \\ y = 1 \\ \\jadi \: x = 7 \: dan \: y = 1[/tex]