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\(\dfrac{x+2014}{2}+\dfrac{2\left(x+2014\right)}{7}=\dfrac{x+2014}{5}+\dfrac{x+2014}{6}\)

\(\left(x+2014\right)\left(\dfrac{1}{2}+\dfrac{2}{7}\right)=\left(x+2014\right)\left(\dfrac{1}{5}+\dfrac{1}{6}\right)\)

\(\left(x+2014\right)\dfrac{11}{14}=\left(x+2014\right)\dfrac{11}{30}\)

Dấu ''=''↔x=-2014

4028  x  0,5 + 4028 + 2014 : \(\dfrac{1}{2}\) x 1,5 + 4028 : 0,5

= 4028 x 0,5 + 4028 x 1  + 2014 x 2 x 1,5 + 4028 x 2

= 4028 x 0,5 + 4028 x 1 + 4028 x 1,5 + 4028 x 2

= 4028 x ( 0,5 + 1 + 1,5 + 2)

= 4028 x 5

= 20140

bạn có thể ghi rõ câu hỏi k

2014 x 3 + 4028 x 2 + 2014 x 5 - 2014 x 2

= 2014 x 3 + 2014 x 2 x 2 + 2014 x 5 - 2014 x 2

= 2014 x 3 + 2014 x 4 + 2014 x 5 - 2014 x 2

= 2014 x ( 3 + 4 + 5 - 2 )

= 2014 x 10 = 20140

\(2014\text{×}3+4028\text{×}2+2014\text{×}5-2014\text{×}2\\ =2014\text{×}3+2014\text{×}2\text{×}2+2014\text{×}5-2014\text{×}2\\ =2014\text{×}3+2014\text{×}4+2014\text{×}5-2014\text{×}2\\ =2014\text{×}\left(3+4+5-2\right)=2014\text{×}10=20140\)

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