`e)25%-2 1/4+0,2:12/5-((-3)/2)^2`
`=1/4-2 1/4+1/5xx5/12-9/4`
`=-2+1/12-9/4`
`=-4+1/12-1/4`
`=-4-1/6`
`=-25/4`
`c)x-2/3=1/5`
`x=1/5+2/3`
`x=3/15+10/15`
`x=13/15`
Vậy `x=13/15`
\(150:\left[25.\left(29-3^3\right)\right]-18\)
\(=150:\left[25.2\right]-18\)
\(=150:50-18\)
\(=3-18\)
\(=-15\)
\(25\%-2\dfrac{1}{4}+0,2:\dfrac{12}{5}-\left(\dfrac{-3}{2}\right)^2\)
\(=\dfrac{1}{4}-\dfrac{9}{4}+\dfrac{1}{5}:\dfrac{12}{5}-\dfrac{9}{4}\)
\(=-2+\dfrac{1}{12}-\dfrac{9}{4}\)
\(=\dfrac{-25}{6}\)
\(x-\dfrac{2}{3}=\dfrac{1}{5}\)
\(x=\dfrac{1}{5}+\dfrac{2}{3}\)
\(x=\dfrac{13}{15}\)
