`b) x : 3/4 + 0,25 = -2/3`
`x : 3/4 + 1/4 = -2/3`
`x : 3/4 = -2/3 - 1/4`
`x : 3/4 = -11/12`
`x = -11/12 . 3/4`
`x = -11/16`
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`i) 3/2 x - 0,25 = 1/3 : -5/6`
`3/2 x - 1/4 = -2/5`
`3/2x = -2/5 + 1/4`
`3/2 x = -3/20`
`x = -3/20 : 3/2`
`x =-1/10`
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`m) 3 2/3 x + 5 1/2 = 11 1/6`
`11/3 x + 11/2 = 67/6`
`11/3 x = 67/6 - 11/2`
`11/3 x = 17/3`
`x = 17/3 : 11/3`
`x = 17/11`