\(\dfrac{4}{6}+\dfrac{7}{13}+\dfrac{17}{9}+\dfrac{19}{13}-\dfrac{8}{9}+\dfrac{14}{6}=\left(\dfrac{4}{6}+\dfrac{14}{6}\right)+\left(\dfrac{7}{13}+\dfrac{19}{13}\right)+\left(\dfrac{17}{9}-\dfrac{8}{9}\right)=3+2+1=6\)
y x 18/5 - y x 3/5 =...
4/6 + 7/13 + 17/9 + 19/13 - 8/9 + 14/6
Tính nhanh
4/6 + 7/13 + 17/9 + 19/13 +1/9 + 14/6
\(\dfrac{19}{13}\) + \(\dfrac{14}{6}\) + \(\dfrac{1}{9}\) + \(\dfrac{4}{6}\) + \(\dfrac{7}{13}\) + \(\dfrac{17}{9}\)
Tính bằng cách thuận tiện nhất:
4/6 + 7/13 + 17/9 + 19/13 + 1/9 + 14/6Tính bằng cách thuận tiện nhất
A. 2/5*4/7+3/5*4/7
B. 17/13*12/17-4/13*12/17
C. 9/14 : 6/7+5/14 : 6/7
D. 9/12 : 7/9*12/19
1.Tính bằng cách hợp lí: 4/6+7/13+17/9+19/13+1/9+14/6
TÍNH NHANH
\(\frac{4+7++17+19+14}{6+13+9+13+9+6}\)=
4/6 + 7/13 + 17/9 + 19/13 + 1/9 + 14/6
k nhé m.n
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=?
