Tính:
1/( $\frac{113}{2010}$ + $\frac{114}{2011}$ – $\frac{115}{2012}$ ) x ( $\frac{1}{2}$ – $\frac{1}{3}$ – $\frac{1}{6}$ )
2/ $\frac{24}{4}$ x ( $\frac{2013}{2014}$ – 8) + $\frac{2013}{2014}$ x ( 2014 – $\frac{24}{4}$)
Tính:
1/( $\frac{113}{2010}$ + $\frac{114}{2011}$ – $\frac{115}{2012}$ ) x ( $\frac{1}{2}$ – $\frac{1}{3}$ – $\frac{1}{6}$ )
2/ $\frac{24}{4}$ x ( $\frac{2013}{2014}$ – 8) + $\frac{2013}{2014}$ x ( 2014 – $\frac{24}{4}$)
1/ `(113/2010+114/2011-115/2012).(1/2-1/3-1/6)`
`=(113/2010+114/2011-115/2012).(3/6-2/6-1/6)`
`=0`
2/
`24/4 . (2013/2014-8)+2013/2014 . (2014-24/4)`
`=24/4 . 2013/2014-24/4 . 8 +2013/2014 . 2014 – 2013/2014 . 24/4`
`=-24/4 . 8 +2013/2014 . 2014`
`=-48+2013=1965`
Đáp án:
Giải thích các bước giải:
ta có:
1/
ta có:
$\frac{113}{2010}$+$\frac{114}{2011}$-$\frac{115}{2012}$x(1/2-13-16)
=$\frac{113}{2010}$+$\frac{114}{2011}$-$\frac{115}{2012}$x(0)
=0
2/
=6x($\frac{2013}{2014}$-8)+$\frac{2013}{2014}$x(2014-6)
=6x$\frac{2013}{2014}$-48+1-6x$\frac{2013}{2014}$
=-47