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01-05-2014
Mathematics

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Simplify 2(5x-3)-(2x+4), 24x-12y+40÷4, (2x)(3y)+2(-xy)

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01-05-2014

[tex]2(5x-3)-(2x+4)=2\cdot5x-2\cdot3-2x-4\\\\=10x-6-2x-4=8x-10\\\\\\(24x-12y+40):4=24x:4-12y:4+40:4\\\\=6x-3y+10\\\\\\(2x)(3y)+2(-xy)=6xy-2xy=4xy[/tex]

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