Đại số lớp 7
Các câu hỏi tương tự
1, Tính
\(A=\left(-3+\frac{3}{4}-\frac{1}{3}\right):\left(5+\frac{2}{5}-\frac{2}{3}\right)\)
\(B=\left(\frac{3}{5}-\frac{4}{15}\right).\left(\frac{2}{7}-\frac{3}{14}\right)-\left(\frac{5}{9}-\frac{7}{27}\right).\left(1-\frac{3}{5}\right)+\left(1-\frac{11}{12}\right).\left(1+\frac{11}{12}\right)\)
Tính : A=\(\frac{\frac{3}{4}-\frac{3}{11}+\frac{3}{13}}{\frac{5}{7}-\frac{5}{11}+\frac{5}{13}}+\frac{\frac{1}{2}-\frac{1}{3}+\frac{1}{4}}{\frac{5}{4}-\frac{5}{6}+\frac{5}{8}}\)
Tính A=\(\left(\frac{1.5+1-0.75}{2.5+\frac{5}{3}-1.25}+\frac{0.375-0.3+\frac{3}{11}+\frac{3}{12}}{-0.625+0.5-\frac{5}{11}-\frac{5}{12}}\right):\frac{1890}{2005}+115\)
Giúp mk vs nka
Tính :a ) Afrac{frac{1}{11}-frac{1}{13}-frac{1}{17}}{frac{5}{11}-frac{5}{13}-frac{5}{17}}+frac{frac{2}{3}-frac{2}{9}-frac{2}{27}+frac{2}{81}}{frac{7}{3}-frac{7}{9}-frac{7}{27}+frac{7}{81}}b ) Bfrac{5^2}{11.16}+frac{5^2}{16.21}+frac{5^2}{21.26}+frac{5^2}{26.31}+...+frac{5^2}{56.61}c ) C-1-frac{1}{3}-frac{1}{6}-frac{1}{10}-frac{1}{15}-...-frac{1}{1225}Cố giúp mk nha mai mk nộp rùi đó
Đọc tiếp
Tính :
a ) \(A=\frac{\frac{1}{11}-\frac{1}{13}-\frac{1}{17}}{\frac{5}{11}-\frac{5}{13}-\frac{5}{17}}+\frac{\frac{2}{3}-\frac{2}{9}-\frac{2}{27}+\frac{2}{81}}{\frac{7}{3}-\frac{7}{9}-\frac{7}{27}+\frac{7}{81}}\)
b ) \(B=\frac{5^2}{11.16}+\frac{5^2}{16.21}+\frac{5^2}{21.26}+\frac{5^2}{26.31}+...+\frac{5^2}{56.61}\)
c ) \(C=-1-\frac{1}{3}-\frac{1}{6}-\frac{1}{10}-\frac{1}{15}-...-\frac{1}{1225}\)
Cố giúp mk nha mai mk nộp rùi đó 
Tính.
\(\frac{\frac{3}{7}-\frac{3}{11}+\frac{3}{13}}{\frac{5}{7}-\frac{5}{11}+\frac{5}{13}}+\frac{\frac{1}{2}-\frac{1}{3}+\frac{1}{4}}{\frac{5}{4}-\frac{5}{6}+\frac{5}{8}}\)
giúp m nha !!!
Tính : \(\frac{\frac{3}{4}-\frac{3}{11}-\frac{3}{13}}{\frac{5}{7}-\frac{5}{11}-\frac{5}{13}}+\frac{\frac{1}{2}-\frac{1}{3}+\frac{1}{4}}{\frac{5}{4}-\frac{5}{6}-\frac{5}{8}}\)
( Các bạn ơi mik cần gấp - giải chi tiết được không ạ )
Tính \(E=\left[\frac{1\frac{11}{31}.4\frac{3}{7}-\left(15-6\frac{1}{3}.\frac{2}{19}\right)}{4\frac{5}{6}+\frac{1}{6}\left(12-5\frac{1}{3}\right)}.\left(-1\frac{14}{93}\right)\right].\frac{31}{50}\)
Thực hiện phép tính:
a) \(A=-\frac{3}{8}.16\frac{8}{17}-0,375.7\frac{9}{17}\)
b) \(B=\frac{0,6-\frac{1}{3}+\frac{3}{11}}{1,4-\frac{7}{9}+\frac{7}{11}}-\frac{\frac{1}{3}-0,25+\frac{1}{5}}{1\frac{1}{6}-0,875+0,7}\)
bài 1:
a) so sánh 2 số : \(3^{30}\) và \(5^{20}\)
b) Tính A= \(\frac{16^3.3^{10}+120.6^9}{4^6+3^{12}+6^{11}}\)