Question

7 2/15-(4 -3 7/15)+2 12/15

Answer 1

1)4-3 7/15=3 15/15-3 7/15=8/15
2)7 2/15-8/15=6 17/15-8/15=6 9/15
3)6 9/15+2 12/15=8 21/15=9 2/5