1) (х-0,8) * 7,3 = (х+0,2) * 6,3

7,3x - 5,84 = 6,3х + 1,26

7,3х - 6,3х = 1,26 + 5,84

х = 7,1

2)5(х-7)=3(х-4)-27

5х-35=3х-12-27

5х-35-3х+12+27=0

2х+4=0

2х=-4

х=-4/2

х=-2