For questions 1- 3 find the exact sum or difference.

question 1. 7/15 + 9/15 + 4/15 =

a) 7/9
b) 1 13/15
c) 2 2/9
d) 1 1/3

question 2. gerri spends 1/21 of her money on pencils and 2/21 on paper. what friction of her money does she spend? give the answer in the simplest form.

a) 1/7
b) 3/20
c) 4/21
d) 8/7

question 3. 5/7 - (3/14 + 3/12) =

a) 2/7
b) 1/21
c) 1/7
d) 1 1/7