已知直线ax+by=11与直线2x-y=7的交点为A.若直线3ax-5by=9与-3x+y=-11的交点为A则A=______B=_______
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![已知直线ax+by=11与直线2x-y=7的交点为A.若直线3ax-5by=9与-3x+y=-11的交点为A则A=______B=_______](/uploads/image/z/14062691-11-1.jpg?t=%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFax%2Bby%3D11%E4%B8%8E%E7%9B%B4%E7%BA%BF2x-y%3D7%E7%9A%84%E4%BA%A4%E7%82%B9%E4%B8%BAA.%E8%8B%A5%E7%9B%B4%E7%BA%BF3ax-5by%3D9%E4%B8%8E-3x%2By%3D-11%E7%9A%84%E4%BA%A4%E7%82%B9%E4%B8%BAA%E5%88%99A%3D______B%3D_______)
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已知直线ax+by=11与直线2x-y=7的交点为A.若直线3ax-5by=9与-3x+y=-11的交点为A则A=______B=_______
已知直线ax+by=11与直线2x-y=7的交点为A.若直线3ax-5by=9与-3x+y=-11的交点为A则A=______B=_______
已知直线ax+by=11与直线2x-y=7的交点为A.若直线3ax-5by=9与-3x+y=-11的交点为A则A=______B=_______
2x-y=7
-3x+y=-11
x=4,y=1,A(4,1)
ax+by=11
3ax-5by=9
4a+b=11
12a-5b=9
a=2,b=3