\(\frac{3}{8}.\frac{-5}{8}-\frac{5}{8}.\frac{5}{11}+\frac{-6}{11}\)
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Những câu hỏi liên quan
3 tháng 8 2017
\(\frac{\frac{3}{8}-\frac{3}{10}+\frac{3}{11}+\frac{3}{12}}{\frac{5}{8}-\frac{5}{10}+\frac{5}{11}+\frac{5}{12}}+\frac{\frac{3}{2}+1+\frac{3}{4}}{\frac{5}{2}+\frac{5}{3}+\frac{5}{4}}\)
\(=\frac{3.\left(\frac{1}{8}-\frac{1}{10}+\frac{1}{11}+\frac{1}{12}\right)}{5.\left(\frac{1}{8}-\frac{1}{10}+\frac{1}{11}+\frac{1}{12}\right)}+\frac{3.\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)}{5.\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)}\)
\(=\frac{3}{5}+\frac{3}{5}\)
\(=\frac{6}{5}\)
EC
4
DP
9 tháng 6 2017
\(\frac{5}{8}+\frac{-5}{11}-\frac{-3}{8}+\frac{-6}{11}\)
\(=\left(\frac{5}{8}-\frac{-3}{8}\right)+\left(\frac{-5}{11}+\frac{-6}{11}\right)\)
\(=1+-1\)
\(=0\)
9 tháng 6 2017
\(=\left(\frac{5}{8}+\frac{-3}{8}\right)+\left(\frac{-5}{11}+\frac{-6}{11}\right)\)
\(=\frac{1}{4}+\left(-1\right)\)
\(=\frac{1}{4}+\frac{-4}{4}\)
\(=\frac{-3}{4}\)
TA
22 tháng 2 2018
\(\frac{\left(\frac{5}{8}+\frac{5}{27}-\frac{5}{49}\right)\cdot8\cdot27\cdot49}{\left(\frac{11}{8}+\frac{11}{27}-\frac{11}{49}\right)\cdot8\cdot27\cdot49}+\frac{6}{11}\)
\(=\frac{8+27-49}{8+27-49}+\frac{6}{11}\)
\(=1+\frac{6}{11}\)
\(=\frac{11}{11}+\frac{6}{11}=\frac{17}{11}\)
22 tháng 2 2018
\(\frac{\frac{5}{8}+\frac{5}{27}-\frac{5}{49}}{\frac{11}{8}+\frac{11}{27}-\frac{11}{49}}+\frac{6}{11}\)
\(=\frac{5\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)}{11\left(\frac{1}{8}+\frac{1}{27}-\frac{1}{49}\right)}+\frac{6}{11}\)
\(=\frac{5}{11}+\frac{6}{11}=\frac{11}{11}=1\)
TL
0
H
0
19 tháng 7 2018
\(\frac{5-\frac{5}{3}+\frac{5}{9}-\frac{5}{27}}{8-\frac{8}{3}+\frac{8}{9}-\frac{8}{27}}:\frac{15-\frac{15}{11}+\frac{15}{121}}{16-\frac{16}{11}+\frac{16}{121}}\)
\(=\frac{5\left(1-\frac{1}{3}+\frac{1}{9}-\frac{1}{27}\right)}{8\left(1-\frac{1}{3}+\frac{1}{9}-\frac{1}{27}\right)}:\frac{15\left(1-\frac{1}{11}+\frac{1}{121}\right)}{16\left(1-\frac{1}{11}+\frac{1}{121}\right)}\)
\(=\frac{5}{8}:\frac{15}{16}\)
\(=\frac{2}{3}\)
Có phép tính vậy cũng phải đăng à EM nên tư duy chút đi
Bài làm
\(\frac{3}{5}.\frac{-5}{8}-\frac{5}{8}.\frac{5}{11}+\frac{-6}{11}\)
\(=\frac{3}{5}.\frac{-5}{8}+\frac{-5}{8}.\frac{5}{11}+\frac{-6}{11}\)
\(=-\frac{5}{8}.\left(\frac{3}{5}+\frac{5}{11}\right)+\left(-\frac{6}{11}\right)\)
\(=-\frac{5}{8}.\left(\frac{33}{55}+\frac{25}{55}\right)+\left(-\frac{6}{11}\right)\)
\(=-\frac{5}{8}.\frac{58}{55}+\left(-\frac{6}{11}\right)\)
\(=-\frac{29}{44}+\left(-\frac{6}{11}\right)\)
\(=-\frac{29}{44}+\left(\frac{-24}{44}\right)\)
\(=-\frac{53}{44}\)
# Học tốt #