Tính A = \(3.\frac{1}{117}.\frac{1}{119}-\frac{4}{117}.5.\frac{118}{119}-\frac{5}{117}.\frac{1}{119}+\frac{8}{39}\)
tính:
D=\(3\frac{1}{117}.\frac{1}{119}-\frac{4}{117}.5\frac{118}{119}-\frac{5}{117.118}+\frac{8}{39}\)
Tính
A= 3 x \(\frac{1}{117}\)x\(\frac{1}{119}\)-\(\frac{4}{117}\)x 5\(\frac{118}{119}\)-\(\frac{5}{117}\)x\(\frac{1}{119}\)+\(\frac{8}{39}\)
Tính giá trị biểu thức :
C= (3+1/117) . (4+1/119).(1+116/117).(5+118/119).5/119
1) Cho n thuộc N; Chứng tỏ: A= \(\frac{14n+3}{21n+5}\) là phân số tối giản
2) Tính : B = \(\frac{1010+1007+\frac{2017}{113}+\frac{2017}{117}-\frac{1010}{119}-\frac{1007}{119}}{1010+1008+\frac{2018}{113}+\frac{2018}{117}-\frac{1010}{119}-\frac{1008}{110}}\)
Tìm x: \(\frac{x-1}{117}+\frac{x-2}{118}+\frac{x-3}{119}=\frac{x-4}{120}+\frac{x-5}{121}+\frac{x-6}{122}\)
Tính B = \(\frac{1010+1007+\frac{2017}{113}+\frac{2017}{117}-\frac{1010}{119}-\frac{1007}{119}}{1010+1008+\frac{2018}{113}+\frac{2018}{117}-\frac{1010}{119}-\frac{1008}{119}}\)
Tính biểu thức :
\(A=\frac{1003+1007+\frac{2010}{113}+\frac{2010}{117}-\frac{100}{119}-\frac{1007}{119}}{1003+1008+\frac{2011}{113}+\frac{2011}{117}-\frac{1003}{119}-\frac{1008}{119}}\)
Giúp nha!!!
A=\(\frac{1003+1007+\frac{2010}{113}+\frac{2010}{117}-\frac{1003}{119}-\frac{1007}{119}}{1003+1008+\frac{2011}{113}+\frac{2011}{117}-\frac{1003}{119}-\frac{1008}{119}}\)