code: def solve(a, b):
      a = convert_to_tensor(a)
      b = convert_to_tensor(b)
      return torch.linalg.solve(a, b)
  
imports: import math
  import torch
  from keras.backend import standardize_dtype
  from keras.backend.torch.core import convert_to_tensor
  from keras.backend.torch.core import get_device
  from keras.backend.torch.numpy import pad
label_desc: Use image node_id 18 for calling a global function with example usage: solve(a, b) and returns: torch