7 years ago , paula was 3 times as old as karl . in 2 years , paula will be twice as old as karl . what is the sum of their ages now ?
"p - 7 = 3 ( k - 7 ) and so p = 3 k - 14 p + 2 = 2 ( k + 2 ) ( 3 k - 14 ) + 2 = 2 k + 4 k = 16 p = 34 p + k = 50 the answer is e ."
add(subtract(multiply(add(negate(subtract(2, multiply(2, const_2))), subtract(multiply(7, 3), 7)), 3), subtract(multiply(7, 3), 7)), add(negate(subtract(2, multiply(2, const_2))), subtract(multiply(7, 3), 7)))