\(\Rightarrow A=\frac{\frac{3}{4}-\frac{6}{10}+\frac{3}{7}+\frac{3}{11}}{\frac{11}{4}-\frac{22}{10}+\frac{11}{7}+\frac{11}{13}}\)
\(\Rightarrow A=\frac{3.\left(\frac{1}{4}-\frac{2}{10}+\frac{1}{7}+\frac{1}{13}\right)}{11.\left(\frac{1}{4}-\frac{2}{10}+\frac{1}{7}+\frac{1}{13}\right)}\)
\(\Rightarrow A=\frac{3}{11}\)
!
Tính nhanh : C = \(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{3}}\)
a,\(\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
b,\(\frac{5}{9}:\left(\frac{1}{3}+\frac{1}{4}\right)+\frac{5}{9}:\left(\frac{1}{9}+\frac{2}{3}\right)\)
giup minh voi!!!!
Thực hiện phép tính (bằng cách hợp lí nếu có thể)
a) \(A=9\left(\frac{-1}{3}\right)^3+\frac{1}{3}\)
b) \(B=15\frac{1}{4}:\left(\frac{-5}{7}\right)-25\frac{1}{4}:\left(\frac{-5}{7}\right)\)
c) \(C=\frac{0,75-0,6+\frac{3}{7}+\frac{3}{13}}{2,75-2,2+\frac{11}{7}+\frac{11}{13}}\)
Tìm x biết:
\(\frac{2,75-2,2+\frac{11}{7}+\frac{11}{3}}{0,75-0,6+\frac{3}{7}+\frac{3}{13}}\) -x-\(\frac{1}{9}=\frac{2}{3}+\frac{2}{15}+\frac{2}{35}+\frac{2}{63}\)
Ai làm đc trước mik cho 2 tick nha
Tính :
( 0,75 - 0,6 + 3/7 + 3/13 ) : ( 11/ 7 + 11/13 + 2,75 - 2,2)
Mà / là phần nhé
Tính nhanh :
A= \(\frac{24\cdot43-23}{24+47-23}\cdot\frac{3+\frac{3}{7}-\frac{3}{11}+\frac{3}{1001}-\frac{3}{13}}{\frac{9}{1001}-\frac{9}{13}+\frac{9}{7}-\frac{9}{11}+9}\)
Giải hộ đúng mk tick
Tính :
\(\frac{-5}{11}.\frac{7}{15}.\frac{11}{-15}.\left(-30\right)\)
\(\frac{\frac{3}{4}-\frac{3}{5}+\frac{3}{7}+\frac{3}{11}}{\frac{13}{4}-\frac{13}{5}+\frac{13}{7}+\frac{13}{11}}\)
Tính:
1,\(\frac{2}{5}+\left(-\frac{4}{5}\right)+\left(-\frac{1}{2}\right)\)
2,\(A=\frac{0,375-0,3+\frac{3}{11}+\frac{3}{12}}{-0,625+0,5-\frac{5}{11}-\frac{5}{12}}+\frac{1,5+1-0,75}{2,5+\frac{5}{3}-1,25}\)
3,\(B=\frac{\frac{1}{3}-\frac{1}{7}-\frac{1}{13}}{\frac{2}{3}-\frac{2}{7}-\frac{2}{13}}.\frac{\frac{1}{3}-0,25+0,2}{1\frac{1}{6}-0,875+0,7}+\frac{6}{7}\)
0,75-0.6+3/7+3/13 phần 2,75-2,2+11/7+11/3
giúp mình vs, mình cần rất gấp
