Răspunsuri

  • Utilizator Brainly
2014-05-29T20:38:05+03:00
Notez numerele cu a,b si c
(a+b+c):3= 144
(a+b):2= 138
(b+c) :2= 150
(138+c):3= 144
138+c= 144 x 3
138+c= 432
c= 432 -138
c= 294
(b+ 294):2 = 150
b+294=150 x2
b+294 = 300
b=300-294
b=6
(a+6):2=138
a+6=138x2
a+6=276
a=276 - 6
a=270
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