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2014-07-23T17:43:29+03:00
X*2=y*3=z*6=k
2x-3y+4z=12
x=k/2
y=k/3
z=k/6
2*k/2-3*k/3+4*k/6=12
k-k+2k/3=12
2k/3=12
2k=36
k=18
x=18/2=9
y=18/3=6
z=18/6=3

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