2/3(1,5х+0,6)- 0,8(5/12х- 0,5)=1

1+0.4-1/3x+0.4=1

-1/3x=1-1.8

-1/3x=-0.8

-x=-2.4

x=2.4

2/3(1,5х+0,6)- 0,8(5/12х- 0,5)=1

2/3(15/10 + 6/10) - 8/10(5/12х - 5/10)=1

2/3*21/10-3х+2/5=1

7/5-3х+2/5=1

-3х=1-9/5

х=-4/5 :3

х=-4/15