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y=gangsing
2x+4y=7000 l x5 l 10x + 20y = 35000
5x+7y=13000l x2 l 10x + 14y = 26000
------------------------------- -
6y = 9000
y = 1500
2x+4y=7000
2x+4(1500)=7000
2x+6000 = 7000
2x = 7000-6000
2x= 1000
x= 500
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Harga 1 kelereng :
1x = 1(500) = Rp.500
2 k + 4 g = 7.000 ⇒ dikali 5 ║ 10 k + 20 g = 30.000
5 k + 7 g = 13.000 ⇒ dikali 2 ║ 10 k +14 g = 26.000
6 g = 9.000
g = 1.500
2k + 4 x 1.500 = 7.000
2k = 7.000 - 6.000
k = 100 / 2
= 500
*K = Kelereng
G = gasing