\(1-\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=0\)
\(1-\left(\frac{49}{9}+y-\frac{133}{18}\right):\frac{63}{4}=0\)
\(1-\left(\frac{49}{9}+y-\frac{133}{18}\right)\times\frac{4}{63}=0\)
\(1-\frac{28}{81}-y\times\frac{4}{63}+\frac{38}{81}=0\)
\(1+\frac{38}{81}-\frac{28}{81}-y\times\frac{4}{63}=0\)
\(1+\frac{10}{81}-y\times\frac{4}{63}=0\)
\(\frac{91}{81}-y\times\frac{4}{63}=0\)
\(y\times\frac{4}{63}=\frac{91}{81}\)
\(y=\frac{91}{81}:\frac{4}{63}\)
\(y=\frac{637}{36}\)
P/s : Số hơi to
\(1-\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=0\)
\(\Rightarrow1-\left(\frac{49}{9}+y-\frac{133}{18}\right):\frac{63}{4}=0\)
\(\Rightarrow\left(\frac{98}{18}+y-\frac{133}{18}\right):\frac{63}{4}=1-0\)
\(\Rightarrow\left(-\frac{35}{18}+y\right):\frac{63}{4}=1\)
\(\Rightarrow-\frac{35}{18}+y=1\times\frac{63}{4}\)
\(\Rightarrow\frac{-35}{18}+y=\frac{63}{4}\)
\(\Rightarrow y=\frac{63}{4}--\frac{35}{18}\)
\(\Rightarrow y=\frac{63}{4}+\frac{35}{18}\)
\(\Rightarrow y=\frac{637}{36}\)
Vậy \(y=\frac{637}{36}\)
\(1-\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=0\)
=> \(\left(5\frac{4}{9}+y-7\frac{7}{18}\right):15\frac{3}{4}=1-0\)
=> \(\left(\frac{49}{9}+y-\frac{133}{18}\right):\frac{63}{4}=1\)
=> \(\left(\frac{49}{9}-\frac{133}{18}\right)+y=1\cdot\frac{63}{4}\)
=> \(\left(-\frac{35}{18}\right)+y=\frac{63}{4}\) => \(y=\frac{63}{4}-\left(-\frac{35}{18}\right)=\frac{63}{4}+\frac{35}{18}\)
=> \(y=\frac{637}{36}\)
Chúc bạn hk tốt!! k cho mình na
