Răspunsuri

2014-09-28T14:52:08+03:00
A;2=456 a=2*456  a=712  proba  712:2=456
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2014-09-28T14:53:50+03:00
2a- a/2= 456
4a/2 - a/2 = 912/2
4a-a= 912
3a= 912
a= 912/3 = 304
2 5 2