1-52/3х-3,7-21/3+1,2х при х=-0,5

1-52/3x-3,7-21/3+1,2x
1-52/3-0,5-3,7-21/3+1,2-0,5=1-17,3-05-3,7-7+1,2=-16,3-05,-3,7-8=15,8-0,5-3,7-8=15,3-3,7-8=11,6-8=3,6