Các câu hỏi tương tự
Tìm X:
\(\frac{50+\frac{50}{3}+\frac{25}{3}+\frac{20}{4}+\frac{10}{3}+\frac{100}{6.7}+...+\frac{100}{98.99}+\frac{1}{99}}{\left(2x-1\right)}\)=11
\(A=5,3:\left(5\frac{5}{28}-2\frac{13}{36}+1\frac{16}{63}\right)\)
\(B=\left(\frac{19}{10}\times\frac{19}{10}+\frac{39}{2}:\frac{13}{3}\right)\times\left(\frac{62}{75}-\frac{12}{75}\right)\)
Rút gọn:
\(\frac{\frac{5}{7}+\frac{6}{11}+\frac{7}{13}}{\frac{10}{7}+\frac{12}{11}+\frac{14}{13}}\)
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Tìm x là số tự nhiên
A.\(\frac{6+x}{33}=\frac{7}{11}\)
B.\(\frac{15}{26}+\frac{x}{13}=\frac{46}{52}\)
C\(\frac{121}{27}X\frac{54}{11}< x< \frac{100}{21}:\frac{25}{126}\)
D.\(1< \frac{11}{x}< 12\)
Tìm x:a) ( frac{2}{11cdot13}+ frac{2}{13cdot15}+ .......... + frac{2}{19cdot21}) *462 - x 19b) x - frac{1}{2}- frac{1}{6}+ frac{1}{12}+ frac{1}{20}+ frac{1}{30}+ frac{1}{42} 1
Đọc tiếp
Tìm x:
a) ( \(\frac{2}{11\cdot13}\)+ \(\frac{2}{13\cdot15}\)+ .......... + \(\frac{2}{19\cdot21}\)) *462 - x = 19
b) x - \(\frac{1}{2}\)- \(\frac{1}{6}\)+ \(\frac{1}{12}\)+ \(\frac{1}{20}\)+ \(\frac{1}{30}\)+ \(\frac{1}{42}\)= 1
Phân số nào lớn nhất trong các phân số sau : \(\frac{7}{9},\frac{3}{5},\frac{11}{13},\frac{99}{101},\frac{9}{11}\)
Rút gọn :
\(\frac{5}{7}+\frac{6}{11}+\frac{7}{13}\)
\(\frac{10}{7}+\frac{12}{11}+\frac{14}{13}\)
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tinh nhanh
\(\frac{4}{3\text{x}7}\)+ \(\frac{5}{7\text{x}12}\)+ \(\frac{1}{12\text{x}13}\)+ \(\frac{7}{13\text{x}20}\)+ \(\frac{3}{20\text{x}23}\)+ \(\frac{6}{23\text{x}29}\)
Tinhs giá trị biểu thức ::a) 8,3 x 39 - 2,93 x 500 + 19,3 x 20b) 3frac{3}{2}timesfrac{3}{17}+frac{4}{9}timesfrac{27}{8}-frac{1}{3}c)9,31 : 6 + 13,8 : 6 -5,11 : 6d) frac{19,8div0,2times44,44div0,5times13,2div0,25}{3,3times88,88div0,5times6,6div0,125times5}e) frac{5}{1.6}+frac{5}{6.11}+...+frac{5}{501.506}f) frac{frac{4}{7}+frac{12}{13}+frac{16}{17}-frac{8}{27}}{frac{5}{21}+frac{15}{39}+frac{20}{51}-frac{10}{81}}
Đọc tiếp
Tinhs giá trị biểu thức ::
a) 8,3 x 39 - 2,93 x 500 + 19,3 x 20
b) \(3\frac{3}{2}\times\frac{3}{17}+\frac{4}{9}\times\frac{27}{8}-\frac{1}{3}\)
c)9,31 : 6 + 13,8 : 6 -5,11 : 6
d) \(\frac{19,8\div0,2\times44,44\div0,5\times13,2\div0,25}{3,3\times88,88\div0,5\times6,6\div0,125\times5}\)
e) \(\frac{5}{1.6}+\frac{5}{6.11}+...+\frac{5}{501.506}\)
f) \(\frac{\frac{4}{7}+\frac{12}{13}+\frac{16}{17}-\frac{8}{27}}{\frac{5}{21}+\frac{15}{39}+\frac{20}{51}-\frac{10}{81}}\)