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Vampiroaica
a fost răspuns

simplificati xy barat + yx barat supra x+ y; abc barat + bca barat + cab barat supra xyz barat +yzx barat+zxy barat

Răspuns :

Iulicv
prima=10x+10y/x+y=10(x+y)/x+y=10
a doua=100a+10b+c+100b+10c+a+100c+10a+b totul supra 100x+10y+z+100y+10z+x+100z+10x+y=
101a+101b+101c/101x+101y+101z=
a+b+c/x+y+z

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