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2014-08-28T20:17:27+03:00
3a+8b +6c= 3(a+2b) + 2(b+3c)=  3* 5,2 +2*4,2= 15,6 + 8,4= 24
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2014-08-28T20:19:22+03:00
E = 3A+8B+6C

A+2B = 5,2 I ·3
3A+6B = 15,6

B+3C = 4,2 I ·2
2B+6C = 8,4

E = 3A+6B+2B+6C = 15,6 + 8,4 = 24

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