Tìm X biết : X x \(\frac{3+\frac{3}{20}+\frac{3}{13}+\frac{3}{2013}}{5+\frac{5}{20}+\frac{5}{13}+\frac{5}{2013}}=\frac{5}{3}\)
\(x+\frac{3+\frac{3}{20}+\frac{3}{13}+\frac{3}{2013}}{5+\frac{5}{20}+\frac{5}{13}+\frac{5}{2013}}=\frac{9}{2}\)
tìm x
Tìm x biết: x x 3 + 3/20 + 3/13 + 3/2013 = 5
5 + 5/20 + 5/13 + 5/2013 3
X *\(\frac{3+\frac{3}{20}+\frac{3}{13}+\frac{3}{2013}}{5+\frac{5}{20}+\frac{5}{13}+\frac{5}{2013}}=\frac{5}{3}\)
\(x\times\frac{3+\frac{3}{20}+\frac{3}{13}+\frac{3}{2013}}{5+\frac{5}{20}+\frac{5}{13}+\frac{5}{2013}}=\frac{5}{3}\)
(Nhanh lên ! Đề tuyển sinh Ams, cần gấp !)
X x 3+3/20+3/13+3/2016/5+5/20+5/13+5/2016
(1 – 2 + 3 – 4 + 5 – 6 + 7 – 8 +........– 98 + 99) x (2013 x 6 – 2013 – 2013 x 5)
tim x
(3/5-x)+13/20=5/6
(x-1/2)x5/3=7/4-1/2
4/3*7 + 5/7*12 + 1/12*13 + 7/13*20 + 3/20*23 + 9/23*32
