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3x - 5y= -11 |2 -----> 6x - 10y= -22 _
22y= 88
y= 88/22
y= 4
6x + 12y= 66
6x + 12(4)= 66
6x + 48= 66
6x= 66 - 48
6x= 18
x= 18/6
x= 3
Jadi :
Hp= {3,4}
2x + 4y = 22 x3 ⇒ 6x+12y = 66
3x - 5y = -11 x2 ⇒ 6x-10y = -22
kemudian di kurangi
⇒ 22y = 88
y = 4
kemudian sistem subtitusi
2x + 4y = 22
2x + 4.4 = 22
2x = 22 - 16
2x = 6
x = 6/2 = 3