若2x+3y=1004,则多项式2(3x-2y)-(x-y)+(-x+9y)=?Thank you!
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![若2x+3y=1004,则多项式2(3x-2y)-(x-y)+(-x+9y)=?Thank you!](/uploads/image/z/1742911-7-1.jpg?t=%E8%8B%A52x%2B3y%3D1004%2C%E5%88%99%E5%A4%9A%E9%A1%B9%E5%BC%8F2%283x-2y%29-%28x-y%29%2B%28-x%2B9y%29%3D%3FThank+you%21)
若2x+3y=1004,则多项式2(3x-2y)-(x-y)+(-x+9y)=?Thank you!
若2x+3y=1004,则多项式2(3x-2y)-(x-y)+(-x+9y)=?
Thank you!
若2x+3y=1004,则多项式2(3x-2y)-(x-y)+(-x+9y)=?Thank you!
2(3x-2y)-(x-y)+(-x+9y)
=6x-4y-x+y-x+9y
=4x+6y
=2(2x+3y)
=2*1004
=2008
ddd
2(3x-2y)-(x-y)+(-x+9y)
=6x-4y-x+y-x+9y
=4x+6y
=2(2x+3y)
=2*1004
=2008