设集合A={(x,y)/x+3y=7},集合B={(x,y)/x-y=-1},则A并B=
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![设集合A={(x,y)/x+3y=7},集合B={(x,y)/x-y=-1},则A并B=](/uploads/image/z/15225371-35-1.jpg?t=%E8%AE%BE%E9%9B%86%E5%90%88A%3D%7B%28x%2Cy%29%2Fx%2B3y%3D7%7D%2C%E9%9B%86%E5%90%88B%3D%7B%28x%2Cy%29%2Fx-y%3D-1%7D%2C%E5%88%99A%E5%B9%B6B%3D)
设集合A={(x,y)/x+3y=7},集合B={(x,y)/x-y=-1},则A并B=
设集合A={(x,y)/x+3y=7},集合B={(x,y)/x-y=-1},则A并B=
设集合A={(x,y)/x+3y=7},集合B={(x,y)/x-y=-1},则A并B=
A∪B={(x,y)/x+3y=7,或 x-y=-1}
A∩B={(1,2)}
A并B=={(x,y)/x+3y=7或x-y=-1},
A∪B={(x,y)/x+3y=7,或 x-y=-1}