Problem: if 3 x + y = 40 , 2 x - y = 20 , for integers of x and y , 4 y ^ 2 = ?
Rationale: "3 x + y = 40 2 x - y = 20 5 x = 60 x = 12 y = 4 4 y ^ 2 = 4 * 16 = 64 answer is e"
annotated_formula: multiply(3, power(subtract(40, multiply(divide(add(40, 20), add(3, 2)), 3)), 2))