\(5+\frac{1}{1+\frac{1}{1+\frac{2}{1+\frac{3}{4}}}}\) = \(5+\frac{1}{1+\frac{1}{1+\frac{2}{\frac{7}{4}}}}\)= \(5+\frac{1}{1+\frac{1}{1+\frac{8}{7}}}\) = \(5+\frac{1}{1+\frac{1}{\frac{15}{7}}}\) = \(5+\frac{1}{1+\frac{7}{15}}\) = \(5+\frac{1}{\frac{22}{15}}\)= \(5+\frac{15}{22}=\frac{125}{22}\)
Bài 1 :Thực hiện phép tính
\(\left(3-\frac{1}{4}+\frac{2}{3}\right)-\left(5+\frac{1}{3}-\frac{6}{5}\right)-\left(6-\frac{7}{4}+\frac{3}{2}\right)\)
ai nhanh mik tik 5
Cho \(\frac{1}{M}=\frac{1}{1+2+3}+\frac{1}{1+2+3+4}+\frac{1}{1+...+5}+....+\frac{1}{1+2+...+59}\)Chứng minh rằng M>2/3
Tìm x thuộc z biết :
X = \(\frac{\frac{3}{7}-\frac{3}{11}+\frac{3}{13}}{\frac{5}{7}-\frac{5}{11}+\frac{5}{13}}+\frac{\frac{1}{2}-\frac{1}{3}+\frac{1}{4}}{\frac{5}{4}-\frac{5}{5}+\frac{5}{6}}\)
giúp m nha !!! m tick
M= \(\frac{1}{2}\times\frac{1}{-3}+\frac{1}{-3}+\frac{1}{4}+\frac{1}{4}\times\frac{1}{-5}+\frac{1}{-5}\times\frac{1}{6}\)
NHỚ CÓ LỜI GIẢI CHI TIẾT NHÉ, AI NHANH MK TICK CHO
C/m \(B=\frac{1}{2^2}+\frac{1}{3^2}+\frac{1}{4^2}+\frac{1}{5^2}+\frac{1}{6^2}+\frac{1}{7^2}+\frac{1}{8^2}< 1\)
a/ A = \(\frac{5^4x20^4}{25^5x4^5}\).
b/ B = \(\frac{2^{30}x5^7+2^{13}x5^{27}}{2^{27}x5^7+2^{10}x5^{27}}\).
c/ C = \(\frac{1}{2}+\frac{1}{2^2}+\frac{1}{2^3}+...+\frac{1}{2^{100}}\).
d/ D = \(1+\frac{1}{5}+\frac{1}{5^2}+\frac{1}{5^3}+...+\frac{1}{5^{100}}\).
Mình đang cần gấp, ai làm nhanh và đúng mik sẽ tik cho 3 cái 3 hôm nha!
( Dấu " x " ở câu a với câu b là dấu nhân đó).
Tìm x :
a) \(\frac{3x+2}{-4x+5}\)=\(\frac{-4}{3}\) c) \(\frac{\left(2x+1\right)}{5}=\frac{3}{2x-1}\) e)\(\frac{\left|6x+1\right|}{4}=\frac{2}{4}\)
b) \(\frac{2.\left|x\right|+5}{-4x+3}\)=\(\frac{-5}{4}\) d)\(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\) g) \(\frac{\left|3x-5\right|}{3}=\frac{2\left|x\right|}{4}\)
P/S : HuHU T_T Giúp mk với T_T 1 câu thôi cx đc T_T AI giúp mk sẽ tik 6 tik nhé ^^ Thanks mng trước ạ T_T
\(M=2\frac{1}{433}\frac{3}{229}-\frac{432}{433}.\frac{1}{229}-\frac{4}{433.229}\)
\(N=3\frac{1}{117}.\frac{1}{119}-\frac{4}{117}.5\frac{118}{119}-\frac{5}{117.119}-\frac{8}{39}\)
Tính:
M=\(\frac{1\frac{11}{31}.4\frac{3}{7}-\left(15-6\frac{1}{3}.\frac{2}{19}\right)}{4\frac{5}{8}+\frac{1}{6}.\left(12-5\frac{1}{3}\right)}\)
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