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2014-11-10T21:01:01+02:00
A+b+b+c+a+c=30+40+50 rezulta 2a+2b+2c=120
2a+2b+2c=120
2(a+b+c)=120
a+b+c=60
a=60-b+c=60-50=10
b=60-a+c=60-40=20
c=60-a+b=60-30=30
20+10
30+10 40+10
1 .a+b =30 15+15 2. A+c= 40 20 + 20 3. B+c=50 25+25
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