Question

0.8(5-х)-1.2(х+4)=-2.8

Answer 1

4-0.8х-1.2х-4.8=-2.8

-0.8х-1.2х=-2.8-4+4.8

-2х=-2

х=1

Answer 2

0.8(5-х)-1.2(х+4)=-2.8

4-0,8х-1,2х-4,8=-2,8

4-4,8+2,8=2х

2х=2

х=2/2=1

х=1                                         ..........................................................................................