Himpunan penyelesaian x-y=-2y + 20 dan +y=3x-13 adalah….
Jawaban Terkonfirmasi
X – y = -2y + 20
y = -x + 20
x + y = 3x – 13
y = 2x – 13
-x + 20 = 2x – 13
-3x = – 33
x = 11
y = -x + 20
= -11 + 20
= 9
Hp = {11,9}
X-y =-2y —-> x= -y
y= 3x-13 —–> -3x=-y-13
—————- –
4x =13 —-> x = 3,25
x = -y
3,25 = -y
y = -3,25