4/7;-3/4;1/-5
Các câu hỏi tương tự
Tinh:
\(\frac{\frac{1}{3}-\frac{1}{4}+\frac{1}{5}}{\frac{7}{6}-\frac{7}{8}+\frac{7}{10}}\)
Giup minh trinh bay cach cach giai voi nhe
Ko hieu vao phan"Doc them"
Chon cau tra loi dung: Phan so nho nhat trong cac phan so sau day la phan so nao?
\(\frac{5}{-3};\frac{7}{-3};\frac{8}{-3};\frac{10}{-3}\)
tinh va viet ket qua duoi dang phan so va hon so
A =\(5+\frac{1}{1-\frac{1}{4+\frac{1}{3-\frac{1}{8+\frac{1}{2-\frac{1}{7}}}}}}\)
Tinh bang cach hop li
c)\(\frac{-5}{7}+\frac{3}{4}+\frac{-1}{5}+\) \(\frac{-2}{7}+\frac{1}{4}\)
tim n de cac cac phan so sau la phan so toi gian
\(\frac{n+7}{3};\frac{n+8}{4};\frac{n+9}{5};\frac{n+10}{6};\frac{n+11}{7}\)
Tinh bang cach hop li
c) \(\frac{-5}{7}+\frac{3}{4}+\frac{-1}{5}\) \(+\frac{-2}{7}+\frac{1}{4}\)
Cho A = \(\frac{\left(3\frac{2}{5}+\frac{1}{5}\right):2\frac{1}{2}}{\left(5\frac{3}{7}-2\frac{1}{4}\right):4\frac{43}{56}}\); B = \(\frac{1,2:\left(1\frac{1}{5}-1\frac{1}{4}\right)}{0,32+\frac{2}{25}}\)
So sánh A và B
Cho A = \(\frac{\left(3\frac{2}{5}+\frac{1}{5}\right):2\frac{1}{2}}{\left(5\frac{3}{7}-2\frac{1}{4}\right):4\frac{43}{56}}\)và B = \(\frac{1,2:\left(1\frac{1}{5}-1\frac{1}{4}\right)}{0,32+\frac{2}{25}}\)
So sánh A và B
Tinh cac tong sau
\(H=\frac{1}{7}+\frac{1}{7^2}+\frac{1}{7^3}+...+\frac{1}{7^{100}}\)
\(I=\frac{4}{5}+\frac{4}{5^2}+\frac{4}{5^3}+...+\frac{4}{5^{200}}\)