Images 6 4 Х 1 3Х

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6 4 х 1 3х. 3*(Х+5)=5*(12-Х)-5. 5х-12=х+12. 5х+12=3х. 2х 3х =12.
3*(Х+5)=5*(12-Х)-5. 5х-12=х+12. 5х+12=3х. 2х 3х =12.

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