Trả lời:
\(y\times\frac{15}{2}-\frac{1}{3}\times\left(\frac{1}{4}+y\right)=96\frac{2}{3}\)
\(\Leftrightarrow y\times\frac{15}{2}-\frac{1}{12}-\frac{1}{3}\times y=\frac{290}{3}\)
\(\Leftrightarrow y\times\left(\frac{15}{2}-\frac{1}{3}\right)=\frac{387}{4}\)
\(\Leftrightarrow y\times\frac{43}{6}=\frac{387}{4}\)
\(\Leftrightarrow y=\frac{27}{2}\)
Vậy \(y=\frac{27}{2}\)
y.15/2-1/3.(1/4+y)=96 2/3
y.15/2-1/12-1/3y=290/3
y.15/2-1/3y=290/3+1/12
y.15/2-1/3y=1161/12
y.(15/2-1/3)=1161/12
y.43/6=1161/12
->y=1161/12:43/6
->y=27/2
->y=13,5
mik tính lại rồi, vẫn ra 13,5
