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2x+3y=14500 x2 =4x+6y=29000
4x+y =11500 x1 =4x+y=11500 -
5y=17500
y=17500/5
y=3500
2x+3y=14500
2x+3(3500)=14500
2x =14500-10500
2x =4000
x =2000
1x+2y=...
2000+2(3500)
=2000+7000
=9000
harus membayar rp.9000
2x + 3y =14500 | 4 | 8x + 12y =58000
4x + 1y =11500 | 2 | 8x + 2y =23000 -
10y = 35000
y= 3500
2x + 3y = 14500
2x + 3(3500) = 14500
2x = 14500 - 10500
2x =4000
x = 4000 : 2 =2000
Jadi, 1x + 2y = 1(2000) + 2(3500) =2000 + 7000 =9000