0.9(4x+3)-(1.6x-0.30,если x=-1

Question

0.9(4x+3)-(1.6x-0.30,если x=-1

Answer 1

0,9(4x+3)-(1,6x-0,3)=3,6х+2,7-1,6х+0,3=2х+3

если х=-1,то

2*(-1)+3=-2+3=1

Answer 2

3.6х+2.7-1.6х-0.30
2х+2.4
2*(-1)+2.4=2.4-2=0.4