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Raka = 1500 + x
Raka + Adi = 10.500
1500 + x + x = 10.500
1500 + 2x = 10.500
2x = 10.500 - 1500
2x = 9000
x = 9000/2
x = 4500
Uang Adi adalah Rp 4.500
jumlah uang mereka = 10.500
misal
uang jajan Raka = 1500 + x
uang jajan adi = x
1500 + x + x = 10.500
1500 + 2x =10.500
2x = 10.500-1500
2x = 9000
x = 4500
1500 + x = 1500 + 4500 = 6000
jadi uang jajan adi adalah 4500 dan uang jajan raka adalah 6000