Question

已知A={(x,y)︱4x+y="6},B={(x,y)" ︱3x+2y=7},則="_" ________

Answer 1

{(1,2)}

因?yàn)锳={(x,y)︱4x+y="6},B={(x,y)" ︱3x+2y=7},則，解得x=1,y=2，故={(1,2)}