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3 kmja, 2 clna + 1 kmja, 6 celna = 4 kmja, 6 clna
Rp 300.000 + Rp 400.000 = Rp 700.000
4 kmja, 6 celana = Rp 700.000
4kmja + 3 celana = 10
700.000 : 10 = 70.000
70.000 : 4 = Rp 15.000,-
3X+2Y=300.000 eliminasi persamaan satu di kali 2
X+4Y=400.000
6X+4Y=600.000 coret 4Ynya , kan sama
X+4Y=400.000
jadi,
6X=600.000 di kurang
X=400.000
jadi,
5X=200.000
x=200.000/5
=40.000 harga kemeja 40.000