Write an expression that represents "the sum of x and itself". type your answer in the space provided. use only lower case letters and do not use spaces in your answer.

Either of the following is such a sum:

The former is more recognizable as matching the given English expression, but the latter is the same thing, in simplified form.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.