Enthalpy questions?

Given this enthalpy change
MgCl₂(s)---->Mg²⁺(g) +2Cl⁻(g)
ΔH∅ =+2490KJ/mol

Mg2+(g)----> Mg²⁻ (aq)
ΔH∅ =-1920KJ/mol

Cl⁻(g)---->Cl⁻(aq)
ΔH∅ =-360KJ/mol
What is the Enthalpy change in KJ/mol for following process

MgCl₂(s)---->MgCl₂(aq)
please show the workings

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