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2014-09-21T12:52:52+03:00
5(3,4+2x)=22,3+10
5(3,4+2x)=32,3
3,4+2x=32,3:5
3,4+2x=6,46
2x=6,46-3,4
2x=3,06
x=3,06:2
x=1,53
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