Răspuns:
a+b+c+d = 102
a-2=b+5 = 4c = d/3
a = 4c+2 b = 4c-5 d = 12c
4c+2+4c-5+c+12c = 102
21c = 105 c = 5
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Răspuns:
a+b+c+d = 102
a-2=b+5 = 4c = d/3
a = 4c+2 b = 4c-5 d = 12c
4c+2+4c-5+c+12c = 102
21c = 105 c = 5