\(\dfrac{-11}{12}.y+0,25=\dfrac{5}{6}\)
\(\Rightarrow\dfrac{-11}{12}.y=\dfrac{5}{6}-0,25=\dfrac{7}{12}\)
\(\Rightarrow y=\dfrac{7}{12}:\dfrac{-11}{12}=\dfrac{-7}{11}\)
Vậy...............
\(\dfrac{-11}{12}\times y+0,25=\dfrac{5}{6}\)
\(\Leftrightarrow\dfrac{-11}{12}\times y=\dfrac{7}{12}\)
\(\Leftrightarrow y=\dfrac{-7}{11}\)
-11/12.y+0,25=5/6
-11/12.y=5/6-0,25
-11/12.y=7/12
y=7/12:-11/12
y=-7/11
-11/12.y +1/4 = 5/6
-11/12.y = 5/6 -1/4
-11/12.y = 7/12
y = 7/12 : -11/12
y = -7/11
\(\dfrac{11}{12}.y+0,25=\dfrac{5}{6}\)
\(\dfrac{11}{12}.y+\dfrac{25}{100}=\dfrac{5}{6}\)
\(\dfrac{11}{12}.y+\dfrac{1}{4}=\dfrac{5}{6}\)
\(\dfrac{11}{12}.y=\dfrac{5}{6}-\dfrac{1}{4}\)
\(\dfrac{11}{12}.y=\dfrac{20}{24}-\dfrac{6}{24}\)
\(\dfrac{11}{12}.y=\dfrac{14}{24}\)
\(\dfrac{11}{12}.y=\dfrac{7}{12}\)
\(y=\dfrac{7}{12}:\dfrac{11}{12}\)
\(y=\dfrac{7}{12}.\dfrac{12}{11}\)
\(y=\dfrac{7}{11}\)
Vậy \(y=\dfrac{7}{11}\)
\(\dfrac{-11}{12}.y+0.25=\dfrac{5}{6}\)
\(\Rightarrow\dfrac{-11}{12}.y=\dfrac{5}{6}-0.25\)
\(\Rightarrow\dfrac{-11}{12}.y=\dfrac{7}{12}\)
\(\Rightarrow y=\dfrac{7}{12}:\dfrac{-11}{12}\)
\(\Rightarrow y=\dfrac{-7}{11}\)