\(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{29}{42}:\frac{1}{28}-8\)
\(=\left(\frac{3}{14}-\frac{13}{21}+\frac{29}{42}\right):\frac{1}{28}-8\)
\(=\left(\frac{9}{42}-\frac{26}{21}+\frac{29}{42}\right):\frac{1}{28}-8\)
\(=\left(\frac{-17}{42}+\frac{29}{42}\right):\frac{1}{28}-8\)
\(=\frac{12}{42}:\frac{1}{28}-8\)
\(=\frac{2}{7}.28-8\)
\(=\frac{56}{7}-8\)
\(=8-8\)
\(=0\)
3/14 : 1/28 -13/21 :1/28 + 29/42 : 1/28 - 8 = ?
c=3/14:1/28-13/21:1/28+29/42:1/28-8
\(C=\dfrac{3}{14}:\dfrac{1}{28}-\dfrac{13}{21}:\dfrac{1}{28}-\dfrac{29}{42}:\dfrac{1}{28}-8\)
\(\text{c) \dfrac{3}{14} : \dfrac{1}{28} - \dfrac{13}{21} : \dfrac{1}{28} - \dfrac{29}{42} : \dfrac{1}{28} - 8}\)
Bài 1 : thực hiện phép tính hợp lí
3/5 . 13/46 - 1/10 . 16/23
3/14 : 1/28 - 13/21 : 1/28 + 29/42 : 1/28 - 8
Giúp mình voiw, làm đầy đủ 2 cqau nhé please
Tính
a , 1/1.2 + 1/1.3 + .... +1/50.51
b, 3/14 : 1/28 - 13/21 : 1/28 + 29/42 : 1/28 - 8
c, 11/125 - 17/18 - 5/7 + 4/9 + 17/14
Giúp mk với
Tính:a,(-40/41.0,32.17/20):64/75
b,-10/11.8/9+7/18.10/11
c,3/14:1/28-13/21:1/28+29/42:1/28-8
d,-12/7.15+2/7.(-15)+(-105).(2/3-4/5+1/7)
tính:
a) \(\frac{11}{125}-\frac{17}{18}-\frac{5}{7}+\frac{4}{9}+\frac{17}{14}\)
b) \(\frac{3}{14}:\frac{1}{28}-\frac{13}{21}:\frac{1}{28}+\frac{29}{42}:\frac{1}{28}-8\)
Bài 1 : thực hiện phép tính hợp lí 3/5 . 13/46 - 1/10 . 16/23 3/14 : 1/28 - 13/21 : 1/28 + 29/42 : 1/28 - 8 Giúp mình voiw, làm đầy đủ 2 cqau nhé please
