Răspunsuri

2014-10-29T23:50:23+02:00
Fie x numarul al treilea
avem (x+32+18):3=28
x+50=28*3
x+50=84
x=84-50
x=34
30 4 30
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2014-10-30T07:29:14+02:00
(32+18+a):3=28
50+a=28·3
50+a=84⇒a=84-50
                a=34
39 4 39