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Verified answer
Stabilo = STipe - X= X
Tipe - X= Stabilo + 5.000
4S + 3X = 57.000
4S + 3(S+5.000) = 57.000
4S + 3S + 15.000 = 57.000
7S = 57.000 - 15.000
7S = 42.000
S = Rp 6.000,00
X = 6.000 + 5.000
X = 11.000
2X = Rp 22.000,00