`25% - 1 1/2 + 0,5 . 3/8`
`=25/100 - 3/2 + 1/2 . 3/8`
`=1/4 - 3/2 +1/2 . 3/8`
`=1/4 -3/2 + 3/16`
`=4/16 - 24/16 + 3/16`
`=(4-24+3)/16`
`=(-17)/16`
\(=\dfrac{1}{4}-\dfrac{3}{2}+\dfrac{1}{2}.\dfrac{3}{8}=\dfrac{1}{4}-\dfrac{3.3}{4}+\dfrac{3}{16}=-\dfrac{5}{4}+\dfrac{3}{16}=\dfrac{-5.4+3}{16}=-\dfrac{17}{16}\)
\(25\%-1\dfrac{1}{2}+0,5\cdot\dfrac{3}{8}=\dfrac{1}{4}-\dfrac{3}{2}+\dfrac{3}{16}=-\dfrac{17}{16}\)
\(\dfrac{1}{4}-\dfrac{3}{2}+\dfrac{1}{2}.\dfrac{3}{8}\)
=\(\dfrac{1}{4}-\dfrac{3}{2}+\dfrac{3}{16}\)
=\(\dfrac{1}{4}-\dfrac{6}{4}+\dfrac{3}{16}\)
=\(\dfrac{-5}{4}+\dfrac{3}{16}\)
=\(\dfrac{-17}{16}\)
