Răspunsuri

2014-01-18T10:16:37+02:00
Spunem ca numerele sunt a, b, c.
a + b + c = 45
a - 3 = x => a=x+3
b + 3 = x => b=x-3
c : 3 = x => c = 3 x x
Si inlocuim:
x+3 + x-3 + 3x = 45
5x = 45 - 3 + 3
5x = 45 
x = 45 : 5
x = 9
a= 9 + 3 = 12
b= 9 -  3 = 6
c = 9 x3 =27

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2014-01-18T11:33:27+02:00