Differentiation between cis and tran isomers when it comes to cyclohexane. drawing the chair confermation and understanding "up" and "down" situations and which substituent takes precendence in occupying an equatorial position

a)Draw the most stable chair conformation of cis-1-cyclopropyl-2-methlcyclohexane. b) Draw the most stable conformation of trans-1-isobutyl-4-methylcyclohexane in both the chair conformation and the wedge structure