Margaret is 7 years more than twice the age of his son

Margaret is 7 years more than twice the age of his son. The age of son is 12. Find the age of mother and find the difference between their ages

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #3531