设å°çº¢ãå°æåå°åä¸äººåå«åäºxãyãzéé¢
x-y=6 (1)
z=2x (2)
z-y=22 (3)
(3)-(1)å¾ï¼z-x=16
å°(2)代å
¥ä¸å¼ä¸å¾ x=16
å°x=16åå«ä»£å
¥(1)å(2)ä¸å¾ï¼y=10, z=32
å æ¤ä»ä»¬ä¸äººä¸å
±åäºx+y+z=16+10+32=58éé¢ã
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