[i]a + b[/i] = [b]2027[/b][br][i]b + c [/i]= 1954[br][i]c + a[/i] = 1301[br]Mennyi [i]a[/i][i]b[/i][i]c[/i]?[br][right]Ötlet: [url=https://www.geogebra.org/m/r3g3xsvx]2027. 328.[/url][/right][br]