Himpunan penyelesaian dari2x+4y=22dan 3x-5y=-11,x,y∈R adalah
sama caranya ya
sama caranya ya
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3x - 5y = -11 |x2|
-------------------
6x + 12 y = 66
6x - 10y = -22
------------------ -
22y = 88
y = 88/22
y = 4
2x + 4y = 22
2x + 4(4) = 22
2x + 16 = 22
2x = 22-16
2x = 16
x = 16/2
x = 8
gini bukan caranya.?