Consider a country described by the IS-LM model (with flat LM curve) at the equilibirum income (lets call it initial equ

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Consider a country described by the IS-LM model (with flat LM
curve) at the equilibirum income (lets call it initial
equilibrium)
a) Describe how the government can perform a fiscal expansion
and the effects of a fiscal expansion on the equilibrium income, on
investment, on private savings and on deficit.
b) Starting from the initial equilibrium, suppose that the
government is running a large deficit and wants to reduce it
without triggering a recession. Which fiscal-monetary policy mix
can be used to achieve this goal in the context of the model?