Problem: ( 7 + 7 + 7 ÷ 7 ) / ( 5 + 5 + 5 ÷ 5 ) = ?
Rationale: "answer given expression = ( 7 + 7 + 7 ÷ 7 ) / ( 5 + 5 + 5 ÷ 5 ) = ( 14 + 1 ) / ( 10 + 1 ) = 15 / 11 option : c"
annotated_formula: subtract(divide(multiply(7, add(7, const_1)), const_2), divide(multiply(subtract(7, const_1), 7), const_2))