what is 2 2 / 3 - 1 1 / 4 divided by 1 / 2 - 1 / 5 ?
2 2 / 3 - 1 1 / 4 = 8 / 3 - 5 / 4 = ( 32 - 15 ) / 12 = 17 / 12 1 / 2 - 1 / 5 = ( 5 - 2 ) / 10 = 3 / 10 so 17 / 12 / 3 / 10 = 17 / 12 * 10 / 3 = 85 / 18 answer - e
subtract(divide(add(multiply(const_10, const_2), 2), 3), divide(add(const_10, const_1), 4))