b)\(\frac{5.7.133}{26+5.13}\)
Ta có:\(\frac{5.7.19.7}{13.2+5.13}\)
\(\frac{5.7.7.19}{13.\left(2+5\right)}\)
\(\frac{5.7.7.19}{13.7}\)
\(\frac{5.7.19}{13}=\frac{35.19}{13}\)
b/ \(\frac{5.7.13}{26+5.13}\)
1b/ 5.7.13/26+5.13
Rút gọn phân số:
\(\frac{-11^5.13^7}{11^5.13^8}\)
Giúp mình nha mình đang cần gấp
Tính:
\(A=\frac{4^5.13+32^2.65}{4^4.104}\)
tìm 2 số nguyên dương (a;b) biết : \(\frac{a}{b}\)=26 ƯCLN ( a;b) =5
Cho A=\(\frac{5.2.\left(-8\right)}{\left(-16\right).\left(-26\right)}\)
Cho B=\(\frac{3.4+3.7}{6.5+9}\)
Rút gọn p/số:
a/ \(\frac{2.\left(-13\right).9.10}{\left(-3\right).4.\left(-5\right).26}\)
b/ \(\frac{15.8+15.4}{12.3}\)
Chứng tỏ:\(\frac{1}{26}+\frac{1}{27}+\frac{1}{28}+...+\frac{1}{49}+\frac{1}{50}=\frac{99}{50}-\frac{97}{45}+...+\frac{7}{4}-\frac{5}{3}=1\)
tìm x biết :
a) \(\left(x+\frac{1}{5}\right)^2+\frac{17}{25}=\frac{26}{25}\)
b) \(-1\frac{5}{27}-\left(3x-\frac{7}{9}\right)^3=-\frac{24}{27}\)
c) \(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2x\right)=0\)
