Apply unknownprop_1ecba3dd5eafa4f5c4681522469f6140788e091a78ad9f01e97cc0b6f2c0488f with
ordsucc,
nat_p,
λ x0 . add_nat 83 x0,
2,
λ x0 x1 . x1 = 149 leaving 4 subgoals.
The subproof is completed by applying nat_ordsucc.
The subproof is completed by applying add_nat_SR with 83.
The subproof is completed by applying nat_2.