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=11/9+7/6*5/3
=11/9+7/6
=139/54
tự rút gọn nếu muốn nhé
k mình
\(1-\left(\frac{73}{8}+X-\frac{173}{24}\right):\frac{50}{3}=0\)
\(\Leftrightarrow\left(\frac{73}{8}+X-\frac{173}{24}\right):\frac{50}{3}=1-0\)
\(\Leftrightarrow\left(\frac{73}{8}+X-\frac{173}{24}\right):\frac{50}{3}=1\)
\(\Leftrightarrow\left(\frac{73}{8}+X-\frac{173}{24}\right)=1.\frac{50}{3}\)
\(\Leftrightarrow\left(\frac{73}{8}+X-\frac{173}{24}\right)=\frac{50}{3}\)
\(\Leftrightarrow\frac{73}{8}+X=\frac{50}{3}+\frac{173}{24}\)
\(\Leftrightarrow\frac{73}{8}+X=\frac{191}{8}\)
\(\Leftrightarrow X=\frac{191}{8}-\frac{73}{8}\)
\(\Leftrightarrow X=\frac{59}{4}\)
Dấu \(.\)là dấu X đấy ngen pn!!!!!Nhớ K cko mik nka
=\(\frac{1}{2}x\frac{2}{3}x\frac{3}{4}x...x\frac{2013}{2014}x\frac{2014}{2015}\)
=\(\frac{1x2x3x...x2013x2014}{2x3x4x...x2014x2015}\)
=\(\frac{1}{2015}\)
( Dau x la dau nhan)
1-\(\left(3\frac{3}{8}+x-2\frac{5}{24}\right)\)\(.\frac{12}{17}=0\)
\(\Rightarrow\left(3\frac{3}{8}+x-2\frac{5}{24}\right)\)\(.\frac{12}{17}\)\(=1\)
\(\frac{27}{8}+x-\frac{53}{24}\) \(=1:\frac{12}{17}\)
\(\frac{27}{8}+x=\frac{17}{12}+\frac{53}{24}\)
\(\frac{27}{8}+x=\frac{34+53}{24}\)
\(\frac{27}{8}+x=\frac{87}{24}\)
\(x=\frac{87}{24}-\frac{27}{8}\)
\(x=\frac{87-81}{24}\)
\(x=\frac{6}{24}=\frac{1}{4}\)
\(1-\left(5\frac{3}{8}+x-7\frac{5}{24}\right):16\frac{2}{3}=0\)
\(\Rightarrow1-\left(\frac{43}{8}+x-\frac{173}{24}\right):\frac{50}{3}=0\)
\(\Rightarrow\left(\frac{43}{8}+x-\frac{173}{24}\right):\frac{50}{3}=1\)
\(\Rightarrow\frac{43}{8}+x-\frac{173}{24}=\frac{53}{3}\)
\(\Rightarrow\frac{43}{8}+x=\frac{53}{3}+\frac{173}{24}\)
\(\Rightarrow\frac{43}{8}+x=\frac{199}{8}\)
\(\Rightarrow x=\frac{199}{8}-\frac{43}{8}\)
\(\Rightarrow x=\frac{156}{8}=\frac{39}{2}\)
\(1-\left(5\frac{3}{8}+x-7\frac{5}{24}\right):16\frac{2}{3}=0\)
\(< =>1-\left(\frac{43}{8}+x-\frac{173}{24}\right):\frac{50}{3}=0\)
\(< =>1\left(\frac{43}{8}+x-\frac{173}{24}\right)=0\)
\(< =>\frac{43}{8}+x-\frac{173}{24}=0\)
\(< =>\frac{43}{8}+x=\frac{173}{24}\)
\(< =>x=\frac{173}{24}-\frac{43}{8}\)
\(< =>x=\frac{11}{6}\)
\(2-\left(5\frac{3}{8}+x-7\frac{5}{24}\right)\)\(:16\frac{2}{3}=0\)
\(\Rightarrow\)\(2-\left(5\frac{3}{8}+x-7\frac{5}{24}\right)=0\)
\(\Rightarrow\)\(5\frac{3}{8}+x-7\frac{5}{24}=2\)
\(\Rightarrow5\frac{3}{8}+x=9\frac{5}{24}\)
\(\Rightarrow x=3\frac{5}{6}\)
( Cách làm thì đúng rồi nhưng đáp án tớ ko chắc chắn )
=>\(\left(\frac{43}{8}+x\frac{75}{24}\right):\frac{50}{3}=1-0\)
\(\left(\frac{43}{8}+x\frac{75}{24}\right):\frac{50}{3}=1\)
=>\(\frac{43}{8}+x\frac{75}{24}=\frac{50}{3}\)
\(x\frac{75}{24}=\frac{50}{3}-\frac{43}{8}\)
\(x\frac{75}{24}=\frac{271}{24}\)
\(x=\frac{271}{24}:\frac{75}{24}\Rightarrow x=\frac{271}{75}\)