How do you answer this problem in simplest terms (reduce and proper)2/3+3/5-5/7?

Question

Need the answer in simplest terms (reduce and proper)

Answer 1

LCM is 3*5*7=105

Multiply top and bottom of 2/3 by 35 to get 70/105

Multiply top and bottom of 3/5 by 21 to get 63/105

Multiply top and bottom of -5/7 by 15 to get -75/105

70+63-75=58

58/105 (which is in simplest terms)

_/

Answer 2

2/3+3/5 -(5/7)

__10_+_9____ =19/15-5/7

    15                

                        __133_-_75_ =58/105

                              105