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2x - 5y =25--> x2
4x - 3y = 29(x1)
2x - 5y= 25(x2)
4x-3y=29
4x-10y=50
________-
7y=-21
y=-3
4x-3.(-3)=29
4x=29-9
4x=20
x=5
Himpunan penyelesaian=(x,y)
=(5,-3) A