Question

Evaluate 6/7 - 2+ -7/9+ 19/21 plz help its urgent

Answer 1

6/7-2-7/9+19/21
=6/7+19/21-(2+7/9)
=(3.6+19.1)/21-(9.2+7)/9
=(18+19)/21-(18+7)/9
=37/21-25/9
=(37.3-25.7)/63
=(111-175)/63
=-64/63