`#Mon`
`a)\frac{x}{27}=-\frac{2}{3,6}`
`<=>3,6x=-2.27`
`<=>3,6x=-54`
`<=>x=-15`
`b)\frac{-0,52}{x}=\frac{-9,36}{16,38}`
`<=>-9,36x=16,38(-0,52)`
`<=>-9,36x=-8,5176`
`<=>x=0,91`
`c)\frac{4\frac{1}{4}}{2\frac{7}{8}}=\frac{x}{1,61}`
`<=>\frac{\frac{17}{4}}{\frac{23}{8}}=\frac{x}{1,61}`
`<=>\frac{34}{23}=\frac{x}{1,61}`
`<=>34xx1,61=23x`
`<=>x=2,58`
