January 2019 1 17 Report
Soal desimal

1)0,2x+0,3y=1,8
0,4x+0,2y=0,4
tentukan nilai x+y

2)0,5x-0,3y=0,1
0,3-0,4y=-0,6
tentukan nilai x dan y

tlnh banget ya,pakai cara ;)

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