Các câu hỏi tương tự
tính
1/3-3/5+5/7-7/9+9/11-11/13+13/15+11/13-9/11+7/9-5/7+3/5
b, A=1/3-3/5+5/7+7/9+9/11-11/13+13/15-9/11+7/9-5/7+3/5-1/3
a,1/3 -3/4 - (-3/5) + 1/72-2/9-1/36 +1/15
b, 1/5 - 3/7 + 5/9 -1/11 + 7/13 - 9/16 - 7/13 + 2/11 -5/9 + 3/7 -1/5
help me pls
a) 1/3-3/4-(-3/5)+1/64-2/9-1/36+1/15
B) 1/3-3/5+5/7-7/9+9/11-11/13+13/15+11/13-9/11
Trình bày cách làm giúp mình nhé
tính A=1/3-3/5+5/7-7/9+9/11-11/13-9/11+7/9-5/7+3/5-1/3
Tính (hợp lí nếu có thể)
dfrac{1}{3} - dfrac{3}{5} + dfrac{5}{7} - dfrac{7}{9} + dfrac{9}{11} - dfrac{11}{13} + dfrac{13}{15} + dfrac{11}{13} - dfrac{9}{11} + dfrac{7}{9} - dfrac{5}{7} + dfrac{3}{5} - dfrac{1}{3}
Đọc tiếp
Tính (hợp lí nếu có thể)
\(\dfrac{1}{3}\) - \(\dfrac{3}{5}\) + \(\dfrac{5}{7}\) - \(\dfrac{7}{9}\) + \(\dfrac{9}{11}\) - \(\dfrac{11}{13}\) + \(\dfrac{13}{15}\) + \(\dfrac{11}{13}\) - \(\dfrac{9}{11}\) + \(\dfrac{7}{9}\) - \(\dfrac{5}{7}\) + \(\dfrac{3}{5}\) - \(\dfrac{1}{3}\)
{(-5/7)-7/9+9/11-11/13}x(3-3/4)
(10/21+14/27-6/11+22/39):(2-2/3)
tính nhanh
\(\frac{1}{3}-\frac{3}{5}+\frac{5}{7}-\frac{7}{9}+\frac{9}{11}-\frac{11}{13}+\frac{13}{15}+\frac{11}{13}-\frac{9}{11}+\frac{7}{9}-\frac{5}{7}+\frac{3}{5}-\frac{1}{3}\)
\(A=\frac{1}{3}-\frac{3}{5}+\frac{5}{7}-\frac{7}{9}+\frac{9}{11}-\frac{11}{13}+\frac{13}{15}+\frac{11}{13}-\frac{9}{11}+\frac{7}{9}-\frac{5}{7}+\frac{3}{5}-\frac{1}{3}\)
left(8-frac{9}{4}+frac{2}{7}right)-left(-6-frac{3}{7}+frac{5}{4}right)-left(3+frac{2}{4}-frac{9}{7}right)frac{9}{7})frac{1}{3}-frac{3}{5}+frac{5}{7}-frac{7}{9}+frac{9}{11}-frac{11}{13}+frac{13}{15}+frac{11}{13}-frac{9}{11}+frac{7}{9}-frac{5}{7}+frac{3}{5}-frac{1}{3}frac{1}{2014}-frac{1}{2014.2013}-frac{1}{2013.2012}-frac{1}{2012.2011}-...-frac{1}{3.2}-frac{1}{2.1}
Đọc tiếp
\(\left(8-\frac{9}{4}+\frac{2}{7}\right)-\left(-6-\frac{3}{7}+\frac{5}{4}\right)-\left(3+\frac{2}{4}-\frac{9}{7}\right)\)\(\frac{9}{7}\))
\(\frac{1}{3}-\frac{3}{5}+\frac{5}{7}-\frac{7}{9}+\frac{9}{11}-\frac{11}{13}+\frac{13}{15}+\frac{11}{13}-\frac{9}{11}+\frac{7}{9}-\frac{5}{7}+\frac{3}{5}-\frac{1}{3}\)
\(\frac{1}{2014}-\frac{1}{2014.2013}-\frac{1}{2013.2012}-\frac{1}{2012.2011}-...-\frac{1}{3.2}-\frac{1}{2.1}\)