Solve math inequelity with SAT resulotion

Hello,

I have a SAT problem that is giving me headache. It is a math
problem that has to be solved with SAT resolution. But I don't see
how I can convert integers and math inequalities into Boolean or CNF
form. The problem is to find (positive integers) values a,b,c,d such
that 2a > b + c and 2b > c + d and 2c > 3d and 3d > a+ c. I don't
see how I can turn this into a CNF. specially the ">" and "+".
I'm still a beginner so have some mercy. I'm not asking for a
complete solution but some hints and guidance in the right direction
or just and small example.

Thanks in advance.

Hassan



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