5/4-yx5/6=-1/12
5/4-y = -1/12:5/6
5/4-y = -1/10
y = 5/4-(-1/10)
y = 27/20
\(\frac{5}{4}-y.\frac{5}{6}=\frac{1}{4}-\frac{1}{3}\)
\(\Rightarrow\frac{5}{4}-y.\frac{5}{6}=-\frac{1}{12}\)
\(\Rightarrow y.\frac{5}{6}=\frac{5}{4}-\left(-\frac{1}{12}\right)\)
\(\Rightarrow y.\frac{5}{6}=\frac{5}{4}+\frac{1}{12}\)
\(\Rightarrow y.\frac{5}{6}=\frac{4}{3}\)
\(\Rightarrow y=\frac{4}{3}:\frac{5}{6}\)
\(\Rightarrow y=\frac{8}{5}\)
Vậy \(y=\frac{8}{5}.\)
\(\frac{5}{4}-y\times\frac{5}{6}=\frac{1}{4}-\frac{1}{3}\)
\(\Rightarrow\frac{5}{4}-\frac{5}{6}y=\frac{-1}{12}\)
\(\Rightarrow\frac{5}{6}y=\frac{4}{3}\)
\(\Rightarrow y=\frac{8}{5}\)
làm lại :
yx5/6=5/4+1/12
yx5/6=3/4
y=8/5
\(\frac{5}{4}-y×\frac{5}{6}=\frac{1}{4}-\frac{1}{3}\)
\(\frac{5}{4}-y×\frac{5}{6}=-\frac{1}{12}\)
\(\frac{5}{4}-y=-\frac{1}{12}:\frac{5}{6}\)
\(\frac{5}{4}-y=-\frac{1}{10}\)
\(y=\frac{5}{4}+\frac{1}{10}\)
\(y=\frac{27}{20}\)
vậy \(y=\frac{27}{20}\)
\(\frac{5}{4}-y×\frac{5}{6}=\frac{1}{4}-\frac{1}{3}\)
\(\frac{5}{4}-y×\frac{5}{6}=-\frac{1}{12}\)
\(y×\frac{5}{6}=\frac{5}{4}+\frac{1}{12}\)
\(y×\frac{5}{6}=\frac{4}{3}\)
\(y=\frac{4}{3}:\frac{5}{6}\)
\(y=\frac{8}{5}\)
vậy \(y=\frac{8}{5}\)
ủa sao có bạn lại bằng 27/20 và 8/5 vậy rốt cuộc cái nào đúng cái nào sai
lộn : thanks mới đúng. hihi >_<
