Maths/Economics Help - Intermediate Level?

Hi, having problems with this question Find the equilibrium: express i on the left hand side in terms of Y and the parameters and exogenous variables on the right hand side. To be honest this is simple rearranging im just having problems discerning how to display the equation from how the wording is expressed and... show more Hi, having problems with this question

Find the equilibrium: express i on the left hand side in terms of Y and the parameters and exogenous variables on the right hand side. To be honest this is simple rearranging im just having problems discerning how to display the equation from how the wording is expressed and would appreciate a hand

Photo attached for reference. Also, M bar, P bar, d0, d1, d2, are all exogenous variables/parameters