Question

2,8х-3(2х-1)=2,8-3,19х

Answer 1

2,8х-3(2х-1)=2,8-3,19х

2,8х-6x+3=2,8-3,19х

-0,01x=−0,2

x=-0,2/(-0,01)

x=20.

 

Проверка:

2,8*20-6*20+3=2,8-3,19*20

-61=-61