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杩?绉??规?涓?浠????ㄤ???浣?棰?锛?杩???互搴??ㄤ??朵??板?棰?????
?跺??灏?杩?涓??圭??????涓?绗??涓??圭?锛?
$$12x-3y+2x+3y=15+6\14x=21\x=\frac{21}{14}=\frac{3}{2}$$
浠e??x=\frac{3}{2}$?扮?浜?涓??圭?涓??
$$4\cdot\frac{3}{2}-y=5\6-y=5\y=1$$
??姝わ??圭?缁???瑙d负$(x,y)=(\frac{3}{2},1)$??
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