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13-03-2020
Mathematics

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כד,12
-2(-x+5y) +3(2x – 6y) ?
C. 4x – 28y

Respuesta :

13-03-2020

Step-by-step explanation:

[tex]-2(-x+5y)+3(2x-6y)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\=(-2)(-x)+(-2)(5y)+(3)(2x)+(3)(-6y)\\\\=2x-10y+6x-18y\qquad\text{combine like terms}\\\\=(2x+6x)+(-10y-18y)\\\\=8x-28y[/tex]

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