подскажите решение 1) 3*620-x=54200 2) 63:(14-f)=7 3) 3*a-7=14 4) 875*4-x=2600

1) 3*620-x=542001860 - x = 54200- x = 54200 - 1860- x = 52340x = -523402) 63/(14-f) = 714-f = 63/714-f=9-f=9-14-f=-5f=53) 3a-7=143a=21a=21/7a=34) 875*4-x=26003500 - x = 2600-x = 2600-3500-x = -900x=900