math
posted by david .
Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference and justify your choices: 2/3, 0, 2/2/3.
a. 1/9 + 2/5 – 1/3 – 3/4
I am confused on where to begin on this question.

1/9 + 2/5 is less than 1/2
1/3 + 3/4 is more than negative 1.
Which of the three answers comes closest?
2/3, 0, 2/2/3.