\(\frac{33-33:\frac{11}{6}}{\frac{6}{11}}\)
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TA
26 tháng 9 2020
\(\frac{33}{2}+\frac{33}{6}+\frac{33}{18}+\frac{33}{54}+\frac{33}{162}+\frac{33}{486}\)
\(=\frac{33.3+33.3+33.3+33.3+33.3}{486}\)
\(=\frac{99.5}{486}\)
\(=\frac{495}{486}\)
26 tháng 9 2020
Gọi \(A=\frac{33}{2}+\frac{33}{6}+...+\frac{33}{486}\)
\(A=33.\left[\left(\frac{1}{1.2}+\frac{1}{2.3}\right)+\left(\frac{1}{3.6}+\frac{1}{6.9}\right)\left(\frac{1}{9.18}+\frac{1}{18.27}\right)\right]\)
\(A=33.\left[\frac{2}{3}+\frac{2}{9}+\frac{2}{27}\right]\)
\(A=66.\left[\frac{9}{27}+\frac{3}{27}+\frac{1}{27}\right]\)
\(A=66.\frac{13}{27}\)
\(A=\frac{286}{9}\)
sai hay đúng cx ko biết nha
22 tháng 8 2020
\(=\left(-\frac{5}{132}-\frac{5}{3}\right)-\left(-\frac{5}{4}+\frac{6}{11}\right)\)
\(=-\frac{75}{44}-\left(-\frac{5}{4}+\frac{6}{11}\right)\)
\(=-\frac{75}{44}+\frac{31}{44}\)
\(=-1\)
22 tháng 8 2020
( \(\frac{-1}{4}\)+ \(\frac{7}{33}\)- \(\frac{5}{3}\) ) - ( \(\frac{-5}{4}\) + \(\frac{6}{11}\))
= ( \(\frac{-1}{4}\)\(\frac{-48}{33}\)) - ( \(\frac{-31}{44}\))
= \(\frac{-1}{4}\)+ \(\frac{-48}{33}\)+ \(\frac{-31}{44}\)
= ( \(\frac{-1}{4}\)+ \(\frac{-31}{44}\)) + \(\frac{-48}{33}\)
= \(\frac{-5}{11}\) + \(\frac{-48}{33}\)
= \(\frac{-21}{11}\)
HỌC TỐT ^^__^^
DP
18 tháng 3 2017
\(\frac{6+x}{33}=\frac{7}{11}\)
\(\Rightarrow\left(6+x\right)\times11=33\times7\)
\(\left(6+x\right)\times11=231\)
\(6+x=231\div11=21\)
\(\Rightarrow x=21-6=15\)
Vậy \(x=15\)
3 tháng 6 2018
\(\frac{6+x}{33}=\frac{7}{11}\)
\(\Leftrightarrow11\cdot\left(6+x\right)=7\cdot33\)
\(\Leftrightarrow66+11x=231\)
\(\Leftrightarrow11x=231-66\)
\(\Leftrightarrow x=165:11\)
\(\Leftrightarrow x=15\)
Dấu . là dấu nhân
3 tháng 6 2018
\(\frac{6+x}{33}=\frac{7}{11}\)
=> ( 6 + x ) . 11 = 231
=> 6 + x = 231 : 11
6 + x = 21
x = 21 - 6
x = 15
Vậy x = 15
R
27 tháng 7 2019
(-1/4+7/33-5/3)-(-5/12+6/11-5/42)
=-1/4+7/33-5/3-5/12-6/11+5/42
=-1/4-5/12+7/33-6/11-5/3+5/42
=-8/12+(-3/11)-25/12
=-8/12-25/12+(-3/11)
=-33/12+-3/11
=-11/4+-3/11
=-133/44
Mk làm sai rồi !
27 tháng 7 2019
\(\left(\frac{-1}{4}+\frac{7}{33}-\frac{5}{3}\right)-\left(\frac{-5}{12}+\frac{6}{11}-\frac{5}{42}\right)\)
\(=\frac{-1}{4}+\frac{7}{33}-\frac{5}{3}+\frac{5}{12}-\frac{6}{11}+\frac{5}{42}\)
\(=\left(\frac{5}{12}-\frac{1}{4}\right)-\left(\frac{5}{3}-\frac{5}{42}\right)-\left(\frac{6}{11}-\frac{7}{33}\right)\)
\(=\frac{1}{6}-\frac{65}{42}-\frac{1}{3}\)
\(=\frac{-29}{21}-\frac{1}{3}\)
\(=\frac{-12}{7}\)
6 tháng 7 2016
\(\left(\frac{-1}{4}+\frac{7}{33}-\frac{5}{3}\right)-\left(\frac{-15}{12}+\frac{6}{11}-\frac{48}{49}\right)\)
\(=\frac{-1}{4}+\frac{7}{33}-\frac{5}{3}+\frac{15}{12}-\frac{6}{11}+\frac{48}{49}\)
\(=\left(\frac{-1}{4}-\frac{5}{3}+\frac{15}{12}\right)+\left(\frac{7}{33}-\frac{6}{11}\right)+\frac{48}{49}\)
\(=\left(\frac{-3}{12}-\frac{20}{12}+\frac{15}{12}\right)+\left(\frac{7}{33}-\frac{18}{33}\right)+\frac{48}{49}\)
\(=\left(\frac{-23}{12}+\frac{15}{12}\right)+\left(\frac{-11}{33}\right)+\frac{48}{49}\)
\(=\frac{-2}{3}+\left(\frac{-1}{3}\right)+\frac{48}{49}\)
\(=-1+\frac{48}{49}\)
\(=-\frac{1}{49}\)
Ùng hộ mk nha ^_-
\(\frac{33-33:\frac{11}{6}}{\frac{6}{11}}\)
\(=\frac{33-33\cdot\frac{6}{11}}{\frac{6}{11}}\)
\(=\frac{33-33\cdot1}{1}\)
\(=33-33=0\)
\(\frac{33-33:\frac{11}{6}}{\frac{6}{11}}\)
\(=\frac{33-33\cdot\frac{6}{11}}{\frac{6}{11}}\)
\(=\frac{33-18}{\frac{6}{11}}\)
\(=\frac{15}{\frac{6}{11}}\)
\(=\frac{55}{2}\)