\(\frac{-34}{37}\cdot\frac{74}{-85}=\frac{4}{5}\)
\(\frac{-34}{37}.\frac{74}{-85}=\frac{-34}{1}.\frac{2}{-85}=\frac{-68}{-85}=\frac{4}{5}\)(Nhớ click cho mình với nhá nhá!)
Tính:
a,\(\frac{-1}{39}+\frac{-1}{52}\) b,\(\frac{-6}{9}+\frac{-12}{16}\) c,\(\frac{-2}{5}-\frac{-3}{11}\) d,\(\frac{-34}{37}\cdot\frac{74}{-85}\) e,\(\frac{-5}{9}:\frac{-7}{18}\)
a) \(\frac{-1}{39}+\frac{-1}{52}\) b)\(\frac{-6}{9}+\frac{-12}{16}\) C)\(\frac{-2}{5}-\frac{-3}{11}\) D) \(\frac{-34}{37}\times\frac{74}{-85}\)
Bài 1: a,(-34)/37×74/-85
B, -5/9÷-7/18
1) tính:
a) \(\frac{-1}{39}\)+\(\frac{-1}{52}\) b) \(\frac{-6}{9}+\frac{-12}{16}\)
c) \(\frac{-2}{5}-\frac{-3}{11}\) d) \(\frac{-34}{37}.\frac{74}{-85}\) e) \(\frac{-5}{9}:\frac{-7}{18}\)
\(A=\frac{34}{7.13}+\frac{51}{13.22}+\frac{85}{22.37}+\frac{68}{49}\).Tính A (nhớ giải chi tiết có like)
A) -1/39+-1/52
B) -6/9+-12/16
C) -2/5--3/11
D) -34/37 *74/-85
E) -5/9:-7/18
\(\frac{34}{7.13}.\:\frac{51}{13.22}.\frac{85}{22.37}.\frac{68}{37.49}\)
cho A=\(\frac{34}{7.13}+\frac{51}{13.22}\)\(+\)\(\frac{85}{22.37}+\frac{68}{37.49}\)
B=\(\frac{39}{7.16}+\frac{65}{16.31}+\frac{52}{31.43}+\frac{26}{43.49}\)
Tính \(\frac{A}{B}\)
\(\frac{x-11}{37}+\frac{x+11}{39}=\frac{x+34}{41}\)
