Toán Lớp 9: 3 = 1 / |2y-1 |
tính giúp em với ạ =))))
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Toán Lớp 9: 3 = 1 / |2y-1 |
tính giúp em với ạ =))))
Comments ( 2 )
3=1/(|2y-1|)
<=>3|2y-1|=1
<=>|2y-1|=1/3
<=>$\left[\begin{matrix} 2y-1=\frac{1}{3}\\ 2y-1=\frac{-1}{3}\end{matrix}\right.$<=>$\left[\begin{matrix} 2y=\frac{4}{3}\\2y=\frac{2}{3}\end{matrix}\right.$<=>$\left[\begin{matrix} y=\frac{2}{3}\\y=\frac{1}{3}\end{matrix}\right.$