\(\frac{8}{47}=\frac{1}{a+\frac{1}{b+\frac{1}{c}}}\)
\(\frac{8}{47}=\frac{1}{a+\frac{1}{b+\frac{1}{c}}}\)
Tính Giá Trị Của a , b , c
\(\frac{8}{47}=1+\frac{1}{a+\frac{1}{b+\frac{1}{c}}}\)
Help me
Đề sai à:) Bạn bỏ cái số 1 ở đầu bài đi là mình ra rồi
Kì vậy:
Hôm qua mình ra
a = 5
b = 1
c = 7
Mà kết quả ko đúng
Biết a ,b ,c là các số tự nhiên thõa mãn\(\frac{8}{47}=\frac{1}{a+\frac{1}{b+\frac{1}{c}}}\)
tổng a+b+c =
Bài 1: Tính
a)\(\left(\frac{9}{25}-2\cdot18\right):\left(3\frac{4}{5}+0,2\right)\)
b)\(\frac{3}{8}\cdot19\frac{1}{3}-\frac{3}{8}\cdot33\frac{1}{3}\)
c)\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
d)\(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)
LÀM NHANH GIÚP MIK ,MIK TICK CHO Ạ
Bài 1:
a) \(\left(\frac{9}{25}-2.18\right):\left(3\frac{4}{5}+0,2\right)\)
\(=\left(\frac{9}{25}-36\right):\left(\frac{19}{5}+\frac{1}{5}\right)\)
\(=\left(\frac{9}{25}-\frac{900}{25}\right):4\)
\(=-\frac{891}{25}.\frac{1}{4}\)
\(=-\frac{891}{100}\)
b) \(\frac{3}{8}.19\frac{1}{3}-\frac{3}{8}.33\frac{1}{3}\)
\(=\frac{3}{8}.\frac{58}{3}-\frac{3}{8}.\frac{100}{3}\)
\(=\frac{3}{8}\left(\frac{58}{3}-\frac{100}{3}\right)\)
\(=\frac{3}{8}\left(-\frac{42}{3}\right)\)
\(=\frac{3}{8}.\left(-14\right)\)
\(=-\frac{21}{4}\)
c) \(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
\(=\frac{27}{23}+\frac{5}{21}-\frac{4}{23}+\frac{1}{2}+\frac{16}{21}\)
\(=\frac{27}{23}+\frac{5}{21}+\left(-\frac{4}{23}\right)+\frac{1}{2}+\frac{16}{21}\)
\(=\left[\frac{27}{23}+\left(-\frac{4}{23}\right)\right]+\left(\frac{5}{21}+\frac{16}{21}\right)+\frac{1}{2}\)
\(=1+1=2\)
d) \(\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{4}{5}\)
\(=\frac{21}{47}+\frac{9}{45}+\frac{26}{47}+\frac{36}{45}\)
\(=\left(\frac{21}{47}+\frac{26}{47}\right)+\left(\frac{9}{45}+\frac{36}{45}\right)\)
\(=1+1=2\)
tổng a+b+c = bao nhiêu biết rằng axbxc là các số tự nhiên thõa mãn \(\frac{8}{47}\)=\(\frac{1}{a+\frac{1}{b+\frac{1}{c}}}\)
Bài 5: Giải các phương trình sau :
a) \(\frac{3x-1-\frac{x-1}{2}}{3}-\frac{2x+\frac{1-2x}{3}}{2}=\frac{\frac{3x-1}{2}-6}{5}\)
b) \(\frac{x-23}{24}+\frac{x-23}{25}=\frac{x-23}{26}+\frac{x-23}{27}\)
c) \(\frac{x+1}{2004}+\frac{x+2}{2003}=\frac{x+3}{2002}+\frac{x+4}{2001}\)
d) \(\frac{x-45}{55}+\frac{x-47}{53}=\frac{x-55}{45}+\frac{x-53}{47}\)
e) \(\frac{x+2}{98}+\frac{x+4}{96}=\frac{x+6}{94}+\frac{x+8}{92}\)
Tìm a,b,c biết:
\(\frac{8}{47}=a+\frac{1}{b+\frac{1}{c}}\)
ai trình bày được lời giải sẽ có tick
Cho a b c thoả mãn
a+b+c =6\(\frac{1}{a+b}+\frac{1}{b+c}+\frac{1}{a+c}=\frac{47}{60}\)
tính giá trị của bthuc M \(M=\frac{a}{b+c}+\frac{b}{a+c}+\frac{c}{a+b}\)
1
\(M+3=\frac{a}{b+c}+1+\frac{b}{a+c}+1+\frac{c}{a+b}+1\)
\(=\frac{a+b+c}{b+c}+\frac{a+b+c}{a+c}+\frac{a+b+c}{a+b}\)
\(=\left(a+b+c\right)\left(\frac{1}{b+c}+\frac{1}{c+a}+\frac{1}{a+b}\right)=6.\frac{47}{60}=\frac{47}{10}\)
\(\Rightarrow M=\frac{47}{10}-3=\frac{17}{10}\)
Tính :
\(A=\frac{28}{15}.\left(\frac{1}{2}\right)^2.3+\left(\frac{8}{15}-\frac{79}{60}\right).\frac{24}{47}\)
\(B=\frac{75}{100}.\frac{28}{15}-\left(\frac{104}{195}+\frac{25}{100}\right).\frac{24}{47}-\frac{51}{13}.\frac{1}{3}\)
Ai làm xong mk k nha!!!
mik ko ghi lại đề nhé!
\(A=\left(\frac{18}{15}.\frac{1}{4}.3\right)+\left(-\frac{47}{60}\right).\frac{24}{47}\)
\(A=\frac{8}{5}+\left(-\frac{2}{5}\right)\)
\(A=\frac{6}{5}\)
\(B=\frac{3}{4}.\frac{28}{15}-\left(\frac{8}{15}+\frac{1}{4}\right).\frac{24}{47}-\frac{17}{13}\)
\(B=\frac{7}{5}-\frac{47}{60}.\frac{24}{47}-\frac{17}{13}\)
\(B=\frac{7}{5}-\frac{2}{5}-\frac{17}{13}\)
\(B=1-\frac{17}{13}\)
\(B=-\frac{4}{13}\)
THANKS