\(-\frac{2087}{\frac{612}{10}}=-2087:\frac{612}{10}=-\frac{2087.10}{612}=-\frac{10435}{306}\)
\(-\frac{2087}{\frac{612}{10}}=-2087:\frac{612}{10}=-\frac{2087.10}{612}=-\frac{10435}{306}\)
tim n de cac cac phan so sau la phan so toi gian
\(\frac{n+7}{3};\frac{n+8}{4};\frac{n+9}{5};\frac{n+10}{6};\frac{n+11}{7}\)
\(\frac{-2087}{612}\)= bao nhieu
tim phan so toi gian nho nhat co tu va mau la cac so tu nhien sao cho khi nhan phan so lan luot voi moi so \(\frac{10}{7};\frac{5}{6};\frac{15}{9}\)thi moi tich tim duoc la so tu nhien
Cho phan so: P = \(\frac{2n+7}{5n+2}\)(n thuoc Z)
a)Tim n thuoc z de P la phan so chua toi gian.
b)Tim n thuoc Z sao cho P la phan so toi gian.
CMR: Phan so P =\(\frac{3n-2}{4n-3}\)la phan so toi gian.
cac phan so \(\frac{n+1}{2n+3}\)va\(\frac{2n+1}{2n+3}\)la cac phan so toi gian voi moi so nguyen n khac -1
Cho phan so A=\(\frac{n+1}{n-3}\left(n\inℤ,n\ne3\right)\).Tim n de A la phan so toi gian
tim n de phan so sau toi gian : \(\frac{-3}{5-n}\)
chung to \(\frac{2n+5}{n+3}\) la phan so toi gian