1) a) doua zerouri : 27300, 27400
b) trei zerouri : 27000, 28000
c) patru zerouri : 20000, 30000
2) suma = 118
a + b + c = 118
b + c = 70
a = 3 · b
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a,b,c
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1) a + b + c = 118 si b + c = 70
a + 70 = 118
a = 118 - 70
a = 48, primul numar
2) a = 3 · b si a = 48
48 = 3 · b
3 · b = 48
b = 48 : 3
b = 16, al doilea numar
3) b + c = 70 si b = 16
16 + c = 70
c =70 - 16
c = 54, al treilea numar