Toán Lớp 7: Tính
A) (-40/41.0,32.17/20):64/75
B) -10/11.8/9+7/18.10/11
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Toán Lớp 7: Tính
A) (-40/41.0,32.17/20):64/75
B) -10/11.8/9+7/18.10/11
Comments ( 2 )
$=$ $($ $-$ $\frac{40}{41}$ $*$ $\frac{8}{25}$ $*$ $\frac{17}{20}$ $)$ $*$ $\frac{75}{64}$
$=$ $-$ $\frac{272}{1025}$ $*$ $\frac{75}{64}$
$=$ $-$ $\frac{51}{164}$
$B)$ $-$ $\frac{10}{11}$ $*$ $\frac{8}{9}$ $+$ $\frac{17}{8}$ $*$ $\frac{10}{11}$
$=$ $\frac{10}{11}$ $*$ $-$ $\frac{8}{9}$ $+$ $\frac{7}{18}$ $*$ $\frac{10}{11}$
$=$ $\frac{10}{11}$ $*$ $-$ $($ $\frac{8}{9}$ $+$ $\frac{7}{18}$ $)$
$=$ $\frac{10}{11}$ $*$ $($ $-$ $\frac{16}{18}$ $+$ $\frac{7}{18}$ $)$
$=$ $\frac{10}{11}$ $*$ $-$ $\frac{1}{2}$
$=$ $-$ $\frac{5}{11}$
$-$ $Vinny,$ $#Muoi,$ $Chúc$ $bạn$ $học$ $tốt,$ $Sayorana~$