Question

7/9-0,4-4/15
ПОЖАЛУСТА РЕШИТЕ!!!!!

Answer 1

7/9-4/10-4/15=(7×10-4×9-4×6)/90=(70-36-24)/90= 10/90=1/9

Answer 2

7/9-0,4-4/15=7/9-4/10-4/15=7/9-2/5-4/15=7*5/45-9*2/45-4*3/45=
  =35/45-18/45-12/45=5/45=1/9