(x-y-3)²和|4x-3x=11|互为相反数,求x=?y=?
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![(x-y-3)²和|4x-3x=11|互为相反数,求x=?y=?](/uploads/image/z/3150587-11-7.jpg?t=%28x-y-3%29%26%23178%3B%E5%92%8C%7C4x-3x%3D11%7C%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%82x%3D%3Fy%3D%3F)
(x-y-3)²和|4x-3x=11|互为相反数,求x=?y=?
(x-y-3)²和|4x-3x=11|互为相反数,求x=?y=?
(x-y-3)²和|4x-3x=11|互为相反数,求x=?y=?
题目应是(x-y-3)²和|4x-3y+11|互为相反数
(x-y-3)²+|4x-3y+11|=0
x-y-3=0 (1)
x=y+3
4x-3y+11=0 (2)
4(y+3)-3y+11=0
4y+12-3y+11=0
y=-23
x=-20
两个只能都为0,联系方程求解